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000-731 - DB2 9 DBA for Linux, UNIX and Windows - BrainDump Information

Vendor Name : IBM
Exam Code : 000-731
Exam Name : DB2 9 DBA for Linux, UNIX and Windows
Questions and Answers : 138 Q & A
Updated On : March 22, 2019
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000-731 exam Dumps Source : DB2 9 DBA for Linux, UNIX and Windows

Test Code : 000-731
Test Name : DB2 9 DBA for Linux, UNIX and Windows
Vendor Name : IBM
Q&A : 138 Real Questions

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IBM DB2 9 DBA for

IBM Db2 query Optimization using AI | killexams.com Real Questions and Pass4sure dumps

In September 2018, IBM announced a new product, IBM Db2 AI for z/OS. This synthetic intelligence engine screens statistics access patterns from executing SQL statements, makes use of machine discovering algorithms to pick out optimum patterns and passes this counsel to the Db2 query optimizer to be used by subsequent statements.

computing device researching on the IBM z Platform

In may also of 2018, IBM announced version 1.2 of its computing device learning for z/OS (MLz) product. here is a hybrid zServer and cloud utility suite that ingests performance information, analyzes and builds models that signify the fitness reputation of quite a few indicators, screens them over time and offers precise-time scoring capabilities.

a number of points of this product offering are geared toward supporting a neighborhood of mannequin developers and bosses. as an example:

  • It supports multiple programming languages equivalent to Python, Scala and R. This makes it possible for statistics modelers and scientists to make use of a language with which they're commonplace;
  • A graphical person interface referred to as the visual mannequin Builder publications mannequin developers with out requiring totally-technical programming skills;
  • It includes diverse dashboards for monitoring mannequin consequences and scoring functions, as well as controlling the system configuration.
  • This computer getting to know suite changed into at first aimed toward zServer-based mostly analytics applications. some of the first obvious decisions changed into zSystem efficiency monitoring and tuning. gadget administration Facility (SMF) statistics which are automatically generated via the working equipment give the uncooked information for device useful resource consumption similar to valuable processor utilization, I/O processing, reminiscence paging and so forth. IBM MLz can assemble and store these records over time, and construct and educate fashions of device habits, ranking these behaviors, identify patterns no longer without difficulty foreseen through people, improve key performance warning signs (KPIs) and then feed the mannequin consequences lower back into the gadget to have an effect on device configuration changes that can improve performance.

    The subsequent step became to put into effect this suite to analyze Db2 efficiency records. One solution, referred to as the IBM Db2 IT Operational Analytics (Db2 ITOA) answer template, applies the computer learning expertise to Db2 operational statistics to profit an realizing of Db2 subsystem fitness. it will possibly dynamically build baselines for key performance indicators, deliver a dashboard of these KPIs and provides operational personnel real-time perception into Db2 operations.

    while regularly occurring Db2 subsystem efficiency is an important aspect in average software health and performance, IBM estimates that the DBA support personnel spends 25% or greater of its time, " ... combating entry course complications which trigger efficiency degradation and service affect.". (See Reference 1).

    AI involves Db2

    agree with the plight of modern DBAs in a Db2 atmosphere. In latest IT world they ought to support one or greater big statistics purposes, cloud utility and database features, utility setting up and configuration, Db2 subsystem and utility efficiency tuning, database definition and administration, disaster restoration planning, and extra. question tuning has been in existence in view that the origins of the database, and DBAs are always tasked with this as neatly.

    The coronary heart of question path evaluation in Db2 is the Optimizer. It accepts SQL statements from applications, verifies authority to access the records, studies the areas of the objects to be accessed and develops a listing of candidate statistics entry paths. These access paths can consist of indexes, desk scans, a number of desk be a part of strategies and others. within the facts warehouse and massive facts environments there are constantly additional decisions attainable. One of those is the existence of abstract tables (on occasion known as materialized question tables) that contain pre-summarized or aggregated statistics, thus allowing Db2 to evade re-aggregation processing. a further choice is the starjoin access course, standard within the information warehouse, the place the order of desk joins is modified for efficiency factors.

    The Optimizer then studies the candidate access paths and chooses the entry path, "with the lowest charge." charge in this context means a weighted summation of resource usage together with CPU, I/O, reminiscence and other supplies. eventually, the Optimizer takes the lowest charge entry direction, shops it in memory (and, optionally, within the Db2 listing) and starts off entry route execution.

    large information and records warehouse operations now consist of software suites that allow the company analyst to use a graphical interface to construct and manipulate a miniature statistics mannequin of the facts they need to analyze. The applications then generate SQL statements in keeping with the clients’ requests.

    The difficulty for the DBA

    so as to do respectable analytics in your diverse data shops you want a fine realizing of the statistics requirements, an realizing of the analytical capabilities and algorithms attainable and a excessive-performance information infrastructure. unluckily, the quantity and site of statistics sources is increasing (each in measurement and in geography), statistics sizes are growing, and functions proceed to proliferate in quantity and complexity. How may still IT managers aid this environment, particularly with the most skilled and mature staff nearing retirement?

    be aware also that a big part of decreasing the overall charge of ownership of those techniques is to get Db2 applications to run sooner and more efficaciously. This always translates into the usage of fewer CPU cycles, doing fewer I/Os and transporting much less records across the network. on the grounds that it is often difficult to even establish which purposes may benefit from performance tuning, one strategy is to automate the detection and correction of tuning issues. this is where machine gaining knowledge of and synthetic intelligence can also be used to awesome effect.

    Db2 12 for z/OS and synthetic Intelligence

    Db2 version 12 on z/OS uses the computing device learning amenities outlined above to acquire and store SQL question textual content and entry course details, as well as specific performance-linked ancient suggestions corresponding to CPU time used, elapsed instances and influence set sizes. This providing, described as Db2 AI for z/OS, analyzes and shops the information in machine learning models, with the mannequin analysis results then being scored and made purchasable to the Db2 Optimizer. The subsequent time a scored SQL commentary is encountered, the Optimizer can then use the mannequin scoring data as enter to its access route option algorithm.

    The outcome should be a reduction in CPU consumption because the Optimizer uses model scoring enter to choose improved access paths. This then lowers CPU prices and speeds application response times. a big abilities is that the use of AI application does not require the DBA to have records science abilities or deep insights into query tuning methodologies. The Optimizer now chooses the premier entry paths based no longer best on SQL query syntax and records distribution information however on modelled and scored ancient efficiency.

    This may also be specifically crucial if you keep statistics in varied locations. for instance, many analytical queries towards big records require concurrent entry to definite statistics warehouse tables. These tables are commonly called dimension tables, and that they include the information points continually used to handle subsetting and aggregation. as an example, in a retail atmosphere consider a table referred to as StoreLocation that enumerates every shop and its place code. Queries towards keep earnings facts might also want to mixture or summarize income with the aid of region; therefore, the StoreLocation desk could be used with the aid of some massive information queries. during this environment it is regular to take the dimension tables and duplicate them consistently to the huge records application. in the IBM world this area is the IBM Db2 Analytics Accelerator (IDAA).

    Now consider about SQL queries from each operational purposes, data warehouse clients and massive information business analysts. From Db2's standpoint, all these queries are equal, and are forwarded to the Optimizer. besides the fact that children, within the case of operational queries and warehouse queries they should most likely be directed to access the StoreLocation table within the warehouse. nonetheless, the query from the enterprise analyst towards big statistics tables should doubtless entry the copy of the desk there. This outcomes in a proliferations of competencies entry paths, and more work for the Optimizer. fortunately, Db2 AI for z/OS can supply the Optimizer the information it should make sensible entry course selections.

    the way it Works

    The sequence of events in Db2 AI for z/OS (See Reference 2) is commonly right here:

  • during a bind, rebind, prepare or explain operation, an SQL remark is handed to the Optimizer;
  • The Optimizer chooses the facts entry path; as the choice is made, Db2 AI captures the SQL syntax, access route alternative and query performance statistics (CPU used, and so forth.) and passes it to a "discovering project";
  • The researching project, which can be achieved on a zIIP processor (a non-general-intention CPU core that does not aspect into application licensing charges), interfaces with the machine gaining knowledge of utility (MLz model services) to save this tips in a mannequin;
  • as the volume of records in every mannequin grows, the MLz Scoring provider (which also can be completed on a zIIP processor) analyzes the mannequin facts and scores the behavior;
  • all through the subsequent bind, rebind, prepare or clarify, the Optimizer now has access to the scoring for SQL models, and makes applicable adjustments to entry route choices.
  • There are additionally quite a few user interfaces that provide the administrator visibility to the popularity of the gathered SQL observation efficiency data and model scoring.

    summary

    IBM's laptop studying for zOS (MLz) providing is getting used to awesome impact in Db2 version 12 to enhance the efficiency of analytical queries in addition to operational queries and their linked applications. This requires administration attention, as you should check that your enterprise is prepared to consume these ML and AI conclusions. How will you measure the expenses and merits of the usage of desktop getting to know? Which IT guide team of workers must be tasked to reviewing the outcome of mannequin scoring, and maybe approving (or overriding) the effects? How will you assessment and justify the assumptions that the software makes about entry course choices?

    In other words, how well did you know your records, its distribution, its integrity and your present and proposed entry paths? this may assess the place the DBAs spend their time in assisting analytics and operational utility performance.

    # # #

    Reference 1

    John Campbell, IBM Db2 exclusive EngineerFrom "IBM Db2 AI for z/OS: boost IBM Db2 software performance with computer researching"https://www.worldofdb2.com/pursuits/ibm-db2-ai-for-z-os-raise-ibm-db2-software-performance-with-ma

    Reference 2

    Db2 AI for z/OShttps://www.ibm.com/help/knowledgecenter/en/SSGKMA_1.1.0/src/ai/ai_home.html


    realizing IBM DB2: Product heritage and strategy | killexams.com Real Questions and Pass4sure dumps

    the following is an excerpt from figuring out DB2: learning visually with examples, 2nd edition, with the aid of Raul Chong,...

    Xiaomei Wang, Michael Dang and Dwaine Snow. it is reprinted here with permission from international business Machines employer; Copyright 2008. read the ebook excerpt beneath or download a free .pdf of the chapter: "figuring out IBM DB2: Product background and strategy."

    Database 2 (DB2) for Linux, UNIX, and windows is a knowledge server developed via IBM. edition 9.5, attainable given that October 2007, is essentially the most current version of the product, and the one on which we center of attention in this booklet.

    in this chapter you will be taught concerning the following:

  • The background of DB2
  • The suggestions administration portfolio of products
  • How DB2 is developed
  • DB2 server editions and consumers
  • How DB2 is packaged for builders
  • Syntax diagram conventions
  • 1.1 short background of DB2

    for the reason that the 1970s, when IBM analysis invented the Relational model and the Structured question Language (SQL), IBM has developed an entire family of statistics servers. development begun on mainframe systems similar to virtual desktop (VM), digital Storage extended (VSE), and varied digital Storage (MVS). In 1983, DB2 for MVS version 1 was born. "DB2" turned into used to indicate a shift from hierarchical databases—such because the assistance management system (IMS) familiar on the time—to the brand new relational databases. DB2 building continued on mainframe structures in addition to on allotted platforms.1 figure 1.1 suggests one of the crucial highlights of DB2 background.

    figure 1.1 DB2 timeline

    In 1996, IBM announced DB2 common Database (UDB) edition 5 for dispensed systems. With this edition, DB2 changed into able to store all types of electronic facts, including traditional relational data, in addition to audio, video, and text files. It turned into the primary version optimized for the net, and it supported more than a few allotted structures—as an example, OS/2, home windows, AIX, HP-UX, and Solaris—from assorted vendors. furthermore, this ordinary database become able to run on loads of hardware, from uniprocessor methods and symmetric multiprocessor (SMP) systems to hugely parallel processing (MPP) systems and clusters of SMP programs.

    despite the fact that the relational mannequin to shop statistics is probably the most standard within the industry today, the hierarchical mannequin never misplaced its magnitude. during the past few years, due to the popularity of eXtensible Markup Language (XML), a resurgence within the use of the hierarchical model has taken area. XML, a flexible, self-describing language, depends on the hierarchical mannequin to shop statistics. With the emergence of new web technologies, the deserve to save unstructured kinds of facts, and to share and exchange assistance between agencies, XML proves to be the most advantageous language to fulfill these needs. these days we see an exponential growth of XML files usage.

    IBM recognized early on the importance of XML, and large investments were made to convey pureXML technology; a expertise that provides for more suitable aid to shop XML files in DB2. After 5 years of development, the trouble of 750 developers, architects, and engineers paid off with the liberate of the first hybrid records server out there: DB2 9. DB2 9, obtainable considering the fact that July 2006, is a hybrid (also called multi-structured) records server since it permits for storing relational records, as well as hierarchical facts, natively. whereas different statistics servers in the market, and former versions of DB2 might save XML files, the storage method used was now not most useful for efficiency and suppleness. With DB2 9's pureXML technology, XML documents are kept internally in a parsed hierarchical method, as a tree; therefore, working with XML documents is significantly superior. In 2007, IBM has gone even additional in its support for pureXML, with the free up of DB2 9.5. DB2 9.5, the newest edition of DB2, no longer most effective enhances and introduces new elements of pureXML, nevertheless it additionally brings advancements in installation, manageability, administration, scalability and efficiency, workload management and monitoring, regulatory compliance, difficulty resolution, help for utility development, and assist for business companion functions.

    DB2 is purchasable for many systems including equipment z (DB2 for z/OS) and equipment i (DB2 for i5/OS). until otherwise mentioned, when we use the time period DB2, we're referring to DB2 edition 9.5 operating on Linux, UNIX, or home windows.

    DB2 is a part of the IBM tips management (IM) portfolio. desk 1.1 shows the distinctive IM products accessible.

    table 1.1 counsel administration products

    tips administration items Description Product offerings data servers give application capabilities for the comfortable and effective management of facts and enable the sharing of assistance across varied platforms IBM DB2IBM IMSIBM InformixIBM U2 records warehousing and business intelligence aid shoppers assemble, prepare, control, analyze, and extract beneficial suggestions from all statistics forms to assist them make quicker, extra insightful company selections. DB2 AlphabloxDB2 cube ViewsDB2 Warehouse EditionDB2 question administration Facility enterprise content material administration & discovery manipulate content, system, and connectivity. The content contains each structured and unstructured facts, comparable to e-mails, electronic types, images, digital media, be aware processing documents, and net content material. function enterprise search and discovery of assistance. DB2 content ManagerDB2 ordinary StoreDB2 CM OnDemandDB2 facts ManagerFileNet P8 and its add-on suitesOmniFind information integration bring together allotted information from heterogeneous environments. agencies view their information as if it have been all dwelling in one region. IBM guidance Server integration utility platform, inclusive of:- WebSphere Federation Server- WebSphere Replication Server- WebSphere DataStage- WebSphere ProfileStage- WebSphere QualityStage- WebSphere guidance-functions Director- WebSphere Metadata Server- WebSphere company word list- WebSphere records event writer

    1.2 The function of DB2 in the tips on demand world

    IBM's path or method is in line with some key ideas and technologies:

    On-Demand BusinessInformation On Demand (IOD)provider-Oriented structure (SOA)internet ServicesXML

    in this area we describe each of these ideas, and we explain the place DB2 matches in the method.

    1.2.1 On-Demand company

    We live in a complex world with advanced computer systems where trade is a relentless. on the identical time, shoppers have become extra worrying and less tolerant of mistakes. In a difficult atmosphere like this, businesses deserve to react right now to market alterations; in any other case, they could be left in the back of by way of rivals. in order to react quickly, a enterprise needs to be built-in and versatile. In other words, a business these days has to be an on-demand company.

    An on-demand business, as described via IBM, is "an business whose company tactics -- built-in end to conclusion across the business and with key partners, suppliers and purchasers -- can respond with speed to any client demand, market probability, or exterior danger."

    IBM's on-demand company model is in keeping with this definition. To help the on-demand model, IBM makes use of the e-business framework shown in figure 1.2.

    figure 1.2 The IBM e-business framework

    In determine 1.2 the dotted line divides the logical ideas at the true with the actual implementation at the bottom. Conceptually, the IBM e-business framework is in keeping with the on-demand company model working environment, which has four standard features: it's built-in, open, virtualized, and autonomic. These qualities are explained later during this area. The enviornment below the dotted line illustrates how this atmosphere is applied via the suite of IBM utility items.

  • Rational is the "build" application portfolio; it's used to increase software.
  • counsel administration (where DB2 belongs) and WebSphere are the "run" application portfolios; they keep and manipulate your facts and control your purposes.
  • Tivoli is the "control" software portfolio; it integrates, offers safety, and manages your general systems.
  • Lotus is the "collaborate" software portfolio used for integration, messaging, and collaboration across the entire other utility portfolios.
  • The IBM DB2 application plays a essential role within the on-demand operating ambiance. All features of the information management portfolio, together with DB2, are developed with the 4 basic characteristics of the on-demand enterprise mannequin in mind.

  • integrated: DB2 software has constructed-in help for each Microsoft and Java development environments. it's also built-in into WebSphere, Tivoli, Lotus, and Rational products. in addition, the DB2 household has cross-platform capabilities and may be integrated natively with internet services and message-queuing applied sciences. It also offers support for heterogeneous statistics sources for both structured and unstructured advice, together with pureXML aid.
  • Open: DB2 software enables for distinctive technologies to join and combine by following requirements. consequently, it gives potent guide for the Linux operating system and for Java, XML, internet services, grid computing, and different foremost industry purposes.
  • Virtualized: Grid computing technology, a kind of allotted computing, collects and shares components in a big community to simulate one huge, virtual computer. DB2 software products assist grid computing technology via federation and integration technologies. both of those are discussed in additional aspect later in this chapter.
  • Autonomic: An autonomic computing equipment manages, repairs, and protects itself. As techniques develop into greater complicated, autonomic computing programs will develop into simple. DB2 provides self-tuning capabilities, dynamic adjustment and tuning, primary and silent installing tactics, and integration with Tivoli for equipment safety and management.
  • The bottom of determine 1.2 suggests the operating techniques by which the IBM utility suite can function: Linux, UNIX, home windows, i5/OS, and z/OS. beneath that, the servers, storage, and network An on-demand enterprise depends on having information available on demand, each time it is needed, by means of people, tools, or functions. counsel On Demand is discussed within the subsequent area.

    1.2.2 information On Demand

    advice On Demand, as its name implies, is making tips attainable every time individuals, equipment, or purposes demand or request it. This can be made possible through offering counsel as a provider. IBM frequently makes use of the illustration in figure 1.3 to clarify what "information as a carrier" skill. Let's use right here instance to explain this idea in a extra interesting manner. assume you're the established manager of a supermarket, and your leading goal is to make this enterprise ecocnomic. to achieve this, you should make decent choices, equivalent to a way to screen items on shelves in order that they promote more. with a view to make good decisions, you should have up-todate, respectable information.

    figure 1.three information as a carrier

    As depicted on the bottom of figure 1.3, many groups today have a big number of heterogeneous sources of counsel. For this particular example let's anticipate your suppliers use SAP and DB2, your revenue branch uses an internally developed software, your smaller supermarket purchasers use Peoplesoft, and Oracle, etc. as a consequence, you see several heterogeneous functions with semi-uncooked facts, so that they can handiest be effective to you if you can combine them all. so as to combine the facts, it has to be offered as a service, and here is possible by utilizing requirements reminiscent of JDBC and ODBC, and wrapping every of those functions as a web service. as soon as the statistics are integrated, you may additionally get a hold of selections that may not had been logical otherwise, comparable to putting beer and diapers in the same aisle in an effort to sell more of both products.

    With the information built-in you can further therapeutic massage it to function some additional evaluation and get insightful relationships. This extra massaging of the information will also be performed through other application, comparable to entity analytics, master statistics, etc as proven on the correct aspect of the figure. finally, this integrated facts can also be handed to other processes, tools and applications, and people for additional evaluation.

    1.2.three service-Oriented architecture

    provider-Oriented structure (SOA), as its name implies, is an structure in response to features -- in particular internet features. SOA is not a product, however a methodology, a means to design methods that enable for integration, flexibility, loosely coupled components, and more suitable code reuse. With this architecture, business actions are handled as services that can be accessed on demand during the community.

    determine 1.four, which is additionally used in lots of IBM displays, depicts the SOA lifecycle. It includes 4 iterative steps or degrees—mannequin, gather, installation, manage—and a fifth step that offers assistance all the way through the cycle: Governance & techniques.

    determine 1.4 The SOA Lifecycle

    A more designated explanation of every stage in the SOA lifecycle is provided in desk 1.2.

    SOA degreeDescription IBM tools That will also be Used assembleThis stage is about building new functions and/or reusing current ones, and assembling them to kind composite functions. WebSphere Integration DeveloperRational utility Developer deploy during this stage your functions and functions are deployed right into a cozy environment that integrates individuals, techniques, and information within your enterprise. WebSphere method ServerWebSphere Message BrokerWebSphere accomplice GatewayWebSphere PortalWebSphere Everyplace DeploymentWorkplace Collaboration ServicesWebSphere guidance IntegratorWebSphere software Server handleIn this stage, you deserve to manipulate and display screen your system, locate and proper inefficiencies and complications, cope with protection, great of service, and common device administration. DB2 content ManagerWebSphere enterprise MonitorTivoli Composite ApplicationManager for SOATivoli identification supervisor Governance Governance underpins all of the lifecycle ranges. It ensures that all of the capabilities from interior and outdoors the firm arecontrolled so the gadget does not spin out of manage. Governance offers each path and control. N/A

    1.2.4 internet services

    a web service, as its name implies, is a service made purchasable throughout the internet. A greater formal, however nevertheless simple definition states that a web service is a method for an utility to name a characteristic over the community; despite the fact, there isn't any deserve to comprehend

  • The location the place this function should be carried out
  • The platform through which the characteristic will run (as an example Linux, UNIX, home windows, the mainframe, Mac OS/X, and so forth.)
  • The programming language in which the function become created (as an example Java, Cobol, C, and so on.)
  • net capabilities are effective because they allow corporations to alternate information with minimal or no human intervention. Let's go again to the supermarket instance to look the vigour of web services in a more sensible state of affairs:

    for example you order 100,000 cookies from a agency, anticipating all of them to be sold in one month. After the month passes only 60,000 are sold, so you are left with forty,000. as a result of these are cookies of a special type, they'll damage in two weeks. You deserve to act fast and sell them to other smaller supermarkets or web companies corresponding to Amazon.com or eBay. which you could seize the mobile and spend a complete morning calling each of the smaller supermarket valued clientele, providing them as many cookies as they'd are looking to purchase from you; otherwise you may take a extra "technical" strategy and develop an easy utility that would do that for you immediately. Assuming each of those smaller supermarket customers provide web features, you might boost an software (in any programming language) that permits you to SQL insert overstocked objects, such as the 40,000 cookies, into a DB2 database desk overstock. You may then define a set off on this table which invokes a DB2 saved procedure (greater about triggers and saved strategies in Chapter 7, Working with Database Objects) that could devour internet services provided by way of the web companies or the smaller supermarket valued clientele. This state of affairs is depicted in determine 1.5.

    determine 1.5 using a web service

    As which you could see from determine 1.5, the fundamental act of inserting forty,000 cookies via your application into the table overstock in the DB2 server makes it possible for the methods of many smaller supermarkets and internet organizations, through the use of their web capabilities, to make the cookies purchasable on their programs quickly, opening new earnings channels. In figure 1.5, DB2 is behaving as an internet provider client, since it is the usage of or "drinking" the internet features, while the smaller supermarket purchasers and web businesses are behaving as the net carrier suppliers, because they're making these net capabilities available for others to make use of. For simplicity applications, we now have left out in determine 1.5 the call to a saved technique. This scenario indicates the power of internet capabilities: company-to-enterprise exchange of advice the use of functions. There is no want for human intervention. DB2 and web features should be discussed in more detail in Chapter 10, learning the DB2 pureXML aid.

    1.2.5 XML

    XML stands for eXtensible Markup Language. XML's recognition and use has grown exponentially during the past few years, as it is a core component of many new applied sciences. The easiest method to keep in mind how XML works is via evaluating it to HTML, considering the fact that many people nowadays are typical with HTML. Let's take a look at the following line in an HTML doc:

    RaulIn the above line, the tag indicates the way you would want to reveal the text, during this case, Raul in daring. Now Let's take a glance at the following line in an XML document: Raul within the above line, the tag describes the textual content Raul. The tag is announcing that Raul is really a name. See the difference? In HTML, tags are used to indicate how you would want to reveal the statistics; in XML, tags are used to definitely describe the information. table 1.3 describes the qualities of XML. table 1.3 features of XML XML characteristic Description bendyXML is a flexible language because it is easy to regulate or adapt. XML is in line with a hierarchical mannequin, which is most applicable to keep unstructured forms of suggestions reminiscent of fiscal advice, lifestyles sciences information (for instance Genome, DNA), etc. easy to expandXML is easy to prolong; this is, that you may create your personal tags. as an instance, moreover the tag in the illustration above, you may create new tags similar to , , and so forth. This potential which you could create your personal language or protocol in response to XML. Describes itself XML can describe itself; an additional document referred to as an XML Schema (which itself is an XML doc) is used to provide rules and descriptions as to what each and every of the tags in a document mean and hinder the type of information the tags can comprise. An older formulation, but nevertheless frequent today, is to make use of DTD files. in the above example, an XML Schema or DTD document can indicate that the tag can handiest be used to keep characters. can be changed to other codecs GXML will also be changed to different codecs like HTML, the use of Extensible Stylesheet Language Transformations (XSLT), a language used for the transformation of XML documents. independent of the platform or dealer XML is unbiased of the platform or dealer; in spite of everything, XML files can be saved in textual content info containing tags. text files are supported in every single place. easy to shareXML is effortless to share with other applications, companies, and processes for the reason that it can be kept as a textual content document. because it is easy to share, it's applicable because the core of internet services. XML is also on the core of net 2.0 construction applied sciences. internet 2.0, as defined in Wikipedia. org "refers to a perceived 2nd era of web-based mostly communities and hosted features -- similar to social-networking sites, wikis, and folksonomies -- which facilitate collaboration and sharing between clients". Wikis, blogs, mash-ups, RSS or atom feeds, etc, that are part of net 2.0 construction applied sciences, are all in accordance with or involving XML. This makes DB2 9.5 the greatest information server platform for internet 2.0 development. desk 1.4 describes the distinct applied sciences which are a part of net 2.0. (to see table 1.4 and to read extra, down load the free .pdf of this chapter.)XML is mentioned in more element in Chapter 10, mastering the DB2 pureXML support.greater informationContinue studying about IBM DB2 with the aid of downloading a free .pdf of the chapter: "figuring out IBM DB2: Product heritage and approach."read different excerpts from information administration books in the Chapter download Library.hearken to a podcast about IBM DB2 9 certifications with Roger Sanders.

    DBI Introduces New efficiency Monitoring facets for IBM Db2 LUW | killexams.com Real Questions and Pass4sure dumps

    Jul 30, 2018

    Joyce Wells

    DBI application, a issuer of Db2 LUW efficiency options, has added new capabilities in its pureFeat V7 efficiency management Suite for IBM Db2 LUW.

    With this release, DBI is elevating performance monitoring to help DBAs and administration teams to cope with the volatility of agile environments, stated Scott Hayes, president and founding father of DBI.

    Agentless color alternative - IBM has achieved a lot of work within the newest liberate of Db2 (version 11) to make pureScale less complicated to use, implement, and administer and, in consequence, DBI has considered stronger adoption of pureScale over the last three hundred and sixty five days, referred to Hayes. To assist shoppers get more from pureScale, DBI’s newest unencumber adds mighty Db2 pureScale performance reporting and trending, including new efficiency displays for global Bufferpools, CF Wait instances, CF Processing times, the Cluster Facility, and Member performance.

    Agentless Collector alternative - in addition to DBI's agent-based mostly collector, the free up adds a new agentless collector choice for monitoring cloud databases the place a server login instantaneous is not accessible. The agentless collector makes it less demanding to computer screen numerous databases with minimal overhead and administration and is specifically important for monitoring cloud databases but also for convenience in lightweight monitoring of non-critical databases, talked about Hayes.

    Database rating Calculations - in accordance with DBI, many clients recognize that the database ranking supplied by pureFeat helps them straight away triage databases to focal point on the worst issues first. The score, starting from 0-10,000, is charge based mostly, helping DBA teams to discover hidden or rising future complications.

    prior to now, the "analyze database rating" characteristic highlighted complications and provided counsel for resolution, but there changed into no indicator for the severity of the issues recognized. The remarks from consumers, talked about Hayes, turned into that they appreciated the device nonetheless it changed into now not clear what the worst issues had been.

    in the new free up, the variety of points subtracted for each difficulty is published so that DBAs can keep in mind what the worst complications are.

    "Index Design Workbench" - DBI’s Predictive Index affect analysis (PIIA) helps Db2 clients take note the affect of adding new indexes given SQL workloads for any timeframe, assisting DBA teams to tune Db2 databases with self assurance and additionally helping them profit change manage approvals greater without problems.

    constructing on the success of this capability, the new free up provides the means for DBAs to modify indexes informed by way of the Design guide (add, eliminate, or reorder columns, and alter style sequences) or invent their own new index that will also be passed into the have an effect on evaluation.

    Now, consumers have the potential to get rid of columns in a suggested index or reorder columns, and if they suppose they are smarter than the utility, stated Hayes, they could create their personal index and put it through the predictive influence analysis device to look if it is going to even have the advisable influence that they expect.

    better style Charts - probably the most favourite capabilities offered by DBI is the vogue charts with exchange event indications plotted on them. however, prior to now, it become most effective feasible to graph certain in a similar fashion scaled metrics across time on an X and Y axis. during this liberate, a brand new Z axis choice has been introduced, making it viable to graph diverse metrics throughout time, helping to identify trigger and impact.

    as an instance, DBAs can now graph the standard transaction response time together with the number of present and active database connections. A DBA may see that after the database is working 30 concurrent lively connections, response instances birth to slow down, talked about Hayes.

    The need for velocity

    With the improved center of attention on DevOps, there's extra pressure to take adjustments instantly and that creates work and stress for DBA teams, followed Hayes, mentioning that “trade is an invite for brand new complications.” by means of featuring the brand new capabilities during this free up, he referred to, DBI is featuring individuals with greater perception into what's happening inside their Db2 environments.

    For greater counsel, goto  www.dbisoftware.com/pureFeat-70-DB2-LUW-efficiency-equipment.phpand DBI utility pureFeat V7 information.

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    DB2 9 DBA for Linux, UNIX and Windows

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    A Product Overview of DB2 9 for Linux, UNIX, and Windows | killexams.com real questions and Pass4sure dumps

    This chapter is from the book 

    DB2 provides a variety of options for connecting to other DB2 and non-DB2 data servers:

  • DB2 Clients—DB2 client code is required on workstations for remote users to access a DB2 database.
  • DB2 Drivers—Some APIs that are part of a DB2 client are packaged on their own, outside of a client installation. DB2 drivers offer a more lightweight deployment option for specific API connectivity.
  • DB2 Connect™—This add-on product provides support for applications executing on Linux, UNIX, and Windows to transparently access DB2 data servers on i5/OS, VM/VSE, and z/OS environments. DB2 Connect provides much more than just connectivity; more details of its capabilities are provided later in this chapter.

  • DB2 Replication—This feature provides replication capabilities for DB2 data servers. There are two kinds of replication, SQL-based replication and Queue-based replication (also know as Q-replication). Both are sometimes referred to as Data Propagator (DPROPR).

    SQL-based replication is included in all of the DB2 mainstream editions that run on Linux, UNIX, and Windows. It's made up of two components, CAPTURE and APPLY. It uses SQL to replay data on target servers.

    Q-Replication is built on the IBM WebSphere MQSeries® technology and is generally thought to be a more available and powerful replication technology. You can add this capability to a DB2 environment through one of the WebSphere Information Integrator products.

  • WebSphere Information Server or WebSphere Federation Server—The WebSphere brand has a suite of products that help you publish, place, cleanse, transform, enrich, and access data across heterogeneous data sources.
  • WebSphere Application Server—A part of this application server is shipped with DB2. It allows developers to use Java as a platform in a transaction processing environment.
  • DB2 Clients

    Once a DB2 application has been developed, you need to install connectivity software on each client workstation in a two-tier environment. If you are deploying a Web-based application in a three-tier environment, you need to, at a minimum, install the DB2 client connectivity software on the application server. In DB2 9 there are basically two types of clients, the DB2 Runtime Client and the DB2 Client.

    A DB2 Runtime Client provides the minimum client footprint (about 20–30 MB) to support connectivity to DB2 9 data servers (the exception to this is if you choose to support communication via specific API drivers, covered later in this section). When you install a DB2 Runtime Client, you install a driver to support all the common programming methodologies, including ADO.NET, ADO, OLE DB, ODBC, JDBC, SQLJ, static SQL, and more.

    Using a DB2 Runtime Client you can perform basic functions, such as running any DB2 commands or SQL statements from a DB2 CLP or CLP session; however, for the most part, this client comes with no other capabilities than supporting data connectivity. For example, there are no graphical-based management tools, documentation, and so on. You can download a DB2 Runtime Client at www14.software.ibm.com/webapp/iwm/web/preLogin.do?lang=en_US&source=swg-dm-db2rtcl.

    A special DB2 Runtime Client is made available as Windows Merge Modules (.msi files), which makes the installation of this software within Windows applications more natural. You can download these files at http://www-304.ibm.com/jct03002c/software/data/db2/runtime.html.

    In contrast, the DB2 Client includes all the functions found in the DB2 Runtime Client plus functions for client-server configuration, tools for database administration and application development, samples, and more. For example, this client includes the Configuration Assistant that provides graphically administration and connectivity tools, as well as a host of programming samples, and so on. The DB2 9 Client replaces the functions found in both the DB2 8 Application Development and DB2 8 Administration clients.

    A DB2 Client's footprint is directly correlated to the components you select to install and can take between 200 MB and 800 MB depending on the options you select. The process to install a DB2 Client is very similar to a DB2 data server. You can download a DB2 Client at http://www-304.ibm.com/jct03002c/software/data/db2/runtime.html.

    The choice of which DB2 client to install should be based on the requirements of the application on the client machine. For example, if you have a database application developed for Linux, UNIX, or Windows and you do not require the DB2 administration or application development tools from a Windows workstation, yet want to support applications written in multiple programming languages like .NET and Java, you should install the DB2 Runtime Client on that workstation.

    Some enterprises prefer to deploy the DB2 Runtime Client code remotely on a dedicated server. In these environments, remote workstations need to access the DB2 Runtime Client code remotely from a code server before accessing to DB2. This type of configuration is known as a thin client. A thin-client configuration can provide many benefits, such as a central catalog directory of all database connections and a single footprint of code to manage. The trade-off is that clients must load the client .dlls from the code server before accessing the remote data server. It should be noted however that this performance hit is only "noticed" on the initial connection. Once the client code is loaded on the client workstation, subsequent calls to the code server are not needed.

    When you want to deploy your DB2 application, you only need to ensure that a DB2 Runtime Client is installed on each workstation executing the application. Figure 1-10 shows the relationship between an application, a DB2 Runtime Client, and the DB2 data server. If the application and database are installed on the same server, connectivity is considered to come from a local client. If the application is installed on a system other than the DB2 data server, its connectivity is considered to come from a remote client.

    Figure 1-10

    Figure 1-10 Accessing a DB2 data server using the DB2 Runtime Client

    DB2 client connectivity can be configured using various supported communication protocols. The supported protocols vary according to operating system:

  • TCP/IP—used in all environments
  • Named Pipe—used in Windows environments
  • DB2 Drivers

    Some larger enterprises and independent software vendors (ISVs) want to deploy their applications written in single language without the overheard of installing and maintaining a DB2 client on each client workstation. Despite the much smaller footprint of the DB2 Runtime Client in DB2 9, IBM makes available two drivers that can be deployed for connectivity on their own, outside of a DB2 Runtime Client or DB2 Client installation.

    The IBM Driver for JDBC and SQLJ can be deployed to support Java-based connectivity to a DB2 data server. This driver is about 2 MB in size and can easily be embedded within your application. In fact, it comes with a royalty-free distribution license for this very purpose.

    You should note however that although this driver can connect to the entire DB2 family, if you're connecting to a DB2 for i5/OS, DB2 for VM/VSE, or DB2 for z/OS data server, you need to additionally license this connectivity with DB2 Connect (covered in the next section) to ensure you are compliant with respect to licensing.

    It's important to note that the IBM Driver for JDBC and SQLJ solely supports Java applications. Aside from not including tooling and documentation, this driver doesn't support data server connectivity using other APIs. For example, you can't support a .NET application using this driver. You can download this driver at www14.software.ibm.com/webapp/download/preconfig.jsp?id=2004-09-20+10%3A09%3A21.003415R&cat=database&fam=&s=c&S_TACT=105AGX11&S_CMP=DB2.

    DB2 9 includes a new standalone driver for CLI and ODBC applications called the IBM DB2 Driver for ODBC and CLI. This driver delivers the same benefits and restrictions as the IBM Driver for JDBC and SQLJ to your DB2 environment, except it solely supports CLI/ODBC connections. You can download this driver at www14.software.ibm.com/webapp/download/preconfig.jsp?id=2004-09-20+13%3A44%3A48.813589R&cat=database&fam=&s=c&S_TACT=105AGX11&S_CMP=SPLT.

    The main benefits of the IBM DB2 Driver for ODBC and CLI are:

  • Light-weight deployment solution for ODBC/CLI applications
  • Much smaller footprint (25M installed) than DB2 RTCL and DB2 Client
  • No need to have DB2 RTCL or DB2 Client installed on the client machines
  • Same concept as the JDBC/SQLJ driver but for ODBC/CLI applications
  • DB2 Connect

    DB2 Connect is a separate product family that licenses client connectivity from distributed platforms to the DB2 family running on i5/OS, VM/VSE, and z/OS operating systems (hereafter referred to as mainframe). Although communications between any members of the DB2 family use the Distributed Relational Database Architecture (DRDA), you have to explicitly license access from DB2 for Linux, UNIX, and Windows clients to these data servers.

    A client accessing DB2 running on the mainframe is generally referred to as a DRDA Application Requester (DRDA AR) and the DB2 server that manages the client connection as a DRDA Application Server (DRDA AS). DB2 Connect only uses TCP/IP as the transport protocol between a DRDA AR and DRDA AS.

    Some of the major capabilities provided by DB2 Connect include:

  • Support for programming APIs such as ADO, ODBC, OLE DB, CLI, JDBC, SQLJ, ADO.NET (and more) to DB2 running on the mainframe.
  • Federation across the DB2 and Informix data servers. You can extend the reach of this federation capability to heterogeneous sources by adding either WebSphere Federation Server or WebSphere Information Server.
  • Connection pooling and the more powerful connection concentration services that provide minimal resource consumption on the mainframe.
  • System z Sysplex exploitation for failover and load balancing. For example, DB2 Connect includes high-availability features such as z/OS Workload Manager Integration (WLM) and automatic re-direct to a data-sharing group.
  • Integration into mainstream development environments for mainframe data access. For example, DB2 Connect makes data artifacts on the mainframe (including nonrelational-related services like CICS and VSAM) transparent to the world's most popular IDEs; for example, a .NET developer can use Microsoft Visual Studio 2005 and build stored procedures without knowing where the data actually resides.
  • DB2 Connect is often used to enable mainframe resources for Web access, better integrate legacy and heritage systems with new deployments on distributed platforms, modernize the application development experience for mainframe development (for example, moving from COBOL to Java), and off-loading development cycles to lower-cost operational environments.

    Depending on the DB2 Connect edition you purchase, you can create a connectivity architecture for single- or multi-tier environments.

    You can see in Figure 1-11 that there are many ways to implement a DB2 Connect product. In a multi-tier environment, you use DB2 client software to connect to the DB2 Connect gateway (in a client/server model) passing the connection context to to the mainframe resource. In a Web-based deployment, you may have DB2 Connect on its own or collocated with the application server. Depending on your configuration, you may or may not need to install a DB2 client.

    Figure 1-11

    Figure 1-11 Using DB2 Connect is a single-tier or multi-tier environment

    DB2 Connect products can be added on to an existing DB2 data server installation, or act as a standalone gateway. Either way, it's purchased separately from DB2. If you are using one of drivers discussed earlier in this chapter, technically you can make the connection to a mainframe DB2 resource, but you still need to purchase a valid DB2 Connect license. There are a number of DB2 Connect editions available and each is suited for a particular implementation of the DB2 Connect software. With the exception of DB2 Connect PE, all of the DB2 Connect editions offer the same function and features; they are merely differentiated by capability. All editions of DB2 Connect PE are considered gateways since they provide client/server access to workstations. To connect to a DB2 Connect gateway, you simply use a DB2 client.

    DB2 Connect Personal Edition (DB2 Connect PE) is similar to DB2 Personal Edition in that it is used for single workstations and doesn't provide its users with any server capabilities. Using DB2 Connect PE, you can make direct connections to DB2 running on the mainframe. In Figure 1-11, the desktop users likely have DB2 Connect PE installed in their workstations. DB2 Connect PE can also act as a regular DB2 client and connect to distributed versions of the data server as well. Some environments deploy DB2 Connect with both direct and gateway connectivity. For example, a developer may make direct connections using the DB2 Connect PE software for certain stages of the development cycle. But once the application is in production, they may use the DB2 Connect PE software to connect to a DB2 Connect gateway to take advantage of the features it provides, such as load balancing, connection optimization, high-availability, and more. DB2 Connect PE is licensed on a per-workstation basis.

    DB2 Connect Enterprise Edition (DB2 Connect EE) can be licensed using two different user-based options: the number of Authorized Users or the number of Concurrent Users. DB2 Connect EE provides the ability to implement a three-tier connectivity architecture that allows you to isolate connectivity to mainframe resources to a specific tier in your architecture. Again, DB2 clients (or drivers) are used to connect to the gateways, and then the DB2 Connect software manages the connection context to the mainframe.

    DB2 Connect Application Server Edition (DB2 Connect ASE) is licensed by the total VU rating of all the applications servers that connect to the mainframe. The VUs that you purchase have nothing to do with how many DB2 Connect servers you set up, or what their rating is. For example, if your Web server farm was rated at 1,000 VUs and you set up a DB2 Connect gateway farm rated at 5,000 VUs, you would have to buy 1,000 VUs of DB2 Connect ASE. DB2 Connect ASE is well suited for environments where you expect to see more growth of mainframe resource than your Web tier because its costs are directly linked to the VU rating of the Web serving tier.

    DB2 Connect Unlimited Edition (DB2 Connect UE) is available for i5/OS and z/OS. DB2 Connect UE for i5/OS is licensed by the number of managed processors attached to the i5/OS partition while DB2 Connect UE for z/OS is licensed with a base server license plus a per-unit charge for the MSU rating of the System z server you are connecting to. DB2 Connect UE is well suited for environments that have flat mainframe cycle growth and heavy Web tier growth as the costs of DB2 Connect UE are directly correlated with the capacity of the mainframe resource. DB2 Connect UE comes with a free copy of Mobility on Demand to move mainframe data to occasionally connected devices, as well as DB2 Connect PE. Essentially, this edition of DB2 Connect, as its name would imply, allows for unlimited deployments.

    There's so much more to the DB2 Connect product than what's detailed in this section. In fact, the name DB2 Connect is misleading because connectivity is just a small part of what this product can do; however, these details are outside the scope of this book.

    DB2 Replication

    DB2 Replication allows for data to be propagated from one location to another. SQL-based replication, also know as Data Propagator (DPROPR) replication, is a free component of the DB2 for Linux, UNIX, and Windows data servers (it's a paid feature on the mainframe). You can also extend this replication capability to support a wide variety of data servers, including DB2, Oracle, Microsoft, Sybase, Informix, IMS, Lotus Notes, and flat files with WebSphere Replication Server.

    An example of SQL-based replication is shown in Figure 1-12. SQL-based replication has been around for over a decade and has proven itself to be extremely flexible, resilient, easy to set up, and scalable.

    Figure 1-12

    Figure 1-12 SQL-based replication extended with WebSphere Replication Server

    In Figure 1-12 you can see the broad reach of the SQL-based replication technology when it is extended with the WebSphere Replication Server product. As you may recall, distributed versions of DB2 come with the DPROPR technology built in and can support replication subscriptions across the DB2 family. The core capabilities of a distributed data server with respect to replication are shown in the top-left and top-right portions of Figure 1-12.

    When you buy WebSphere Replication Server, you also get Q-based replication (Figure 1-13). In Q-based replication, each message represents a transaction that is placed on a WebSphere MQ Series message queue. This replication is known for its highly parallel apply process and rich conflict detection and resolution services.

    WebSphere Federation Server and WebSphere Information Server

    WebSphere Information Server provides features and functions to place, publish, integrate, find, cleanse, and access data. The federation capabilities are worth mentioning as they relate to data access. WebSphere Federation Server contains a subset of the functionality found in WebSphere Information Server, namely the federation capabilities (and hence will be the focus of this section). You can learn more about WebSphere Federation Server and WebSphere Information Server at www.ibm.com/software/data/integration/.

    A federated system is a distributed database environment that appears as a single virtual database to end users and applications. The WebSphere Federation Server technology (some of which is built into DB2) allows SQL statements to transparently access, join, or update data located across heterogeneous data sources. Federated support enables the DB2 data server to evaluate global statistics on all data sources in order to optimize requests for the remote data. For example, the global optimizer can use knowledge of source statistics, source indexes, source functions, server and network speeds, and so on.

    The SQL support in a DB2 federated environment supports the same SQL as a non-federated environment, including advanced object-relational SQL operations across the federated data sources, such as recursive SQL, common table expressions (CTEs), and more. If the remote data source doesn't have this capability, DB2 will compensate for the missing functions.

    Perhaps the greatest benefit to a federated system is that developers only have to learn a single dialect of SQL; namely, the DB2 ANSI-compliant SQL API. If an external data source has different data types or non-standard SQL, DB2 will transparently compensate for missing functions and convert data types. For example, SQL Server 2005 has a MONEY data type whereas DB2 uses a DECIMAL data type to support currency. Without the WebSphere Federation Server technology, a developer would have to know the differences between these data servers, or cast them to like data types using OLE DB. With WebSphere Federation Server, developers just code as if they were always accessing DB2 data, and the rest is taken care of.

    An example of federated access is shown in Figure 1-14.

    Figure 1-14

    Figure 1-14 The power of federation—any data, one API

    In Figure 1-15 you can see the technology components that make up a federated database. Nicknames are used to implement a low form of granularity with respect to the data sources you want to make available. Nicknames essentially are local aliases on remote tables, although they can be mapped to specific rows and columns. A collection of nicknames is located within a server that represents that actual data source. For example, in Figure 1-15 Oracle is one such data source, so the server component would represent a specific Oracle database. All the SQL eventually flows through a wrapper, which is a library of code that allows access to a particular class of data servers. Connections made to these servers use their native protocol; for example, the Oracle connection will use the Net8 client.

    You can see in Figure 1-14 that with WebSphere Federation Server you can pretty much extend the reach of DB2 to any data source in your environment. For example, in the life sciences industry, scientists need access to specialized data to support their research related to drug discovery. IBM offers a set of Life Sciences wrappers that can be used to build a federated system that can access data useful to scientists, including Excel spreadsheets, image data, flat files, and BLAST (Basic Local Alignment Search Tool).

    If a wrapper is not available for purchase, there is a software developer's kit (SDK) that you can use to build your own.

    Database Enterprise Developer's Edition

    IBM offers a special discounted suite of Information Management products that you can purchase at a discount for development, evaluation, demonstration, and testing of your application programs; this edition is called Data Enterprise Developer Edition (DEDE).

    Some of the products included in this comprehensive developer offering are:

  • DB2 Express 9
  • DB2 Workgroup 9
  • DB2 Enterprise 9
  • DB2 Runtime Client (including .msi merge modules on Windows)
  • DB2 Client
  • IBM Driver for ODBC and CLI
  • IBM Driver for JDBC and SQLJ
  • DB2 Developer Workbench
  • DB2 Embedded Application Server (components of WebSphere Application Server)
  • DB2 Information Center
  • DB2 Documentation CD
  • DB2e Enterprise Edition
  • WebSphere MQ (this is a restricted copy that can only be used in conjunction with the DB2 software)
  • Rational Web Developer (this is a restricted copy that can only be used in conjunction with the DB2 software)
  • Tivoli System Automation (TSA) for Linux and AIX
  • Informix IDS Enterprise Edition
  • IBM Cloudscape/Apache Derby
  • DB2 Connect Unlimited Edition for i5/OS and z/OS
  • All the DB2 Extenders™, namely DB2 Spatial Extender, DB2 Geodetic Extender, DB2 Net Search Extender, and the DB2 XML Extender
  • All of the DB2 add-on feature packs outlined earlier in this chapter
  • Most of the products within DEDE are available for all the platforms that DB2 Enterprise supports (unless of course a product doesn't exist on a specific platform). The data server where you install DEDE can be on a platform that is different from the one on which the application will eventually be deployed or tested because of the common code base used in the distributed DB2 environment. In fact, almost any applications developed using DEDE can be executed on any system that has DB2 client software (or specific drivers for which the application is written) installed.

    The application development environment provided with DEDE allows application developers to write programs using today's most popular methodologies, including:

  • Embedded SQL
  • Call Level Interface (CLI)/Open Database Connectivity (ODBC)
  • .NET Framework 2.0
  • DB2 Application Programming Interfaces (APIs)
  • Web Services
  • Java Database Connectivity (JDBC) and SQLJ
  • Python™
  • PHP
  • Perl™
  • Ruby on Rails™
  • DEDE also includes the necessary programming libraries, header files, code samples, and pre-compilers for all of the supported programming languages.

    DB2 Developer Workbench

    The DB2 9 Developer Workbench (DB2 DWB) replaces the DB2 8 Development Center. The DB2 DWB is an Eclipse-based graphical environment that supports the rapid development of DB2 SQL and Java stored procedures, SQL scalar and table user defined functions (UDFs), SQL statements, XQuery statements, and Web Services. However, there's so much more to this list. For example, the DB2 DWB includes an SQL editor that's enriched with syntax colorization and code assistants, as well as teaming support, compare utilities, and more.

    The DB2 DWB is a separate tool and is maintained separate from a DB2 data server. You can download it from www-304.ibm.com/jct03001c/software/data/db2/ad/dwb.html.

    The DB2 DWB is really meant for power DBAs that aren't coding experts but require rapid development assistance for building business logic for their data servers. Depending on your environment, you may elect to use another tool like Toad for DB2 or Visual Studio. Pure developers will likely choose to use the plug-ins provided with DB2 9 into their respective IDEs, although they are free to use the DB2 DWB. For the most part, you can perform the same tasks in any of the tools that IBM ships or the integration points in specific IDEs.

    A snapshot of the Developer Workbench screen is shown in Figure 1-16.

    DB2 Extenders

    DB2 Extenders offer the ability to manipulate data outside of conventional rows and columns to include the manipulation of special data types (for example, spatial types that have associated LAT/LONG coordinates and SQL-based functions to operate on them), searching services, and more. The purpose of the DB2 Extenders is to provide for the management of this data through the familiar DB2 SQL API.

    The DB2 Extenders encapsulate the attributes, structure, and behavior of these unstructured data types and stores this information in DB2. From the developer's perspective, the DB2 Extenders appear as seamless extensions to the database and enable the development of multimedia-based applications. In other words, a spatial data type is no different than a built-in data type that they may be accustomed to. This section briefly details the DB2 Extenders that are provided by IBM.

    DB2 Spatial Extender

    The DB2 Spatial Extender (DB2 SE) provides the ability to create spatially aware data objects and store them within your DB2 database, along with other spatially related objects like (LAT/LONG) coordinates and more. Almost all industries could benefit from this free technology in DB2. For example, the banking and finance industry could visually envelope customer segments for brand location identification. Municipal governments could use this technology for flood plain identification, the retail industry for billboard locations, and more. This seems apparent when you consider that almost all data has some sort of spatial component to it: we all have an address, merchandise in a warehouse has a stock location, and so on.

    The business benefit of the DB2 SE lies in the notion that it's a lot easier to spot visually represented information than data reported in rows and columns.

    When you enable your DB2 database for the DB2 SE, you can interact with your data using SQL or specialized spatial tools from other vendors. The point is that with the DB2 SE, DB2 understands the spatial "dialect" and the operations that you want to perform with it.

    For example, a telematics application on a PDA may provide its users with a list of nearby Chinese restaurants that serve Peking Duck based on the dynamic request of this user. In this case, after the client's PDA creates a location box using Global Positioning System (GPS) coordinates, it could generate SQL statements similar to the following:

    SELECT NAME, DESCRIPTION, ADDRESS FROM RESTAURANTS WHERE OVERLAPS (LOCATION, BOX(GETGPS(),2000,2000)) AND CATEGORY = 'CHINESE' AND DOC CONTAINS(MENU,'PEKING DUCK');

    OVERLAPS is a spatial function that shows interested data in a binding box defined by the OVERLAPS boundary specification; there are many other spatial functions, including INTERSECTS, WITHIN, BUFFERS, and so on.

    DB2 Geodetic Extender

    The DB2 Geodetic Extender builds upon capabilities available in the DB2 Spatial Extender and adds compensation for real-world objects like the curvature of the earth's surface. The algorithms in this extender seek to remove the inaccuracies introduced by projections and so on. This extender is available only for DB2 Enterprise as part of the Data Geodetic Management feature.

    DB2 Net Search Extender

    The DB2 Net Search Extender (DB2 NSE) combines in-memory database technology with text search semantics for high-speed text search in DB2 databases. Searching with it can be particularly advantageous in Internet applications where performance is an important factor. The DB2 NSE can add the power of fast full-text retrieval to your DB2 applications. Its features let you store unstructured text documents of up to 2 GB in databases. It offers application developers a fast, versatile, and intelligent method of searching through such documents.

    Additionally, the DB2 NSE provides a rich set of XML searching capabilities with advanced search features like sounds-like, stemming, and so on. It is shipped free in DB2 9 (it was a chargeable extender in DB2 8) to facilitate non-XML index searching of XML data stored in pureXML columns.

    DB2 XML Extender

    The DB2 XML Extender is provided with DB2 and allows you to store XML documents in DB2; it also gives you the ability to shred and store XML in its component parts as columns in multiple tables. In either case, indexes can be defined over the elements or attributes of an XML document for fast retrieval. Furthermore, text and fragment search can be enabled on the XML column or its decomposed parts via the DB2 Net Search Extender. The DB2 XML Extender can also help you formulate an XML document from existing DB2 tables for data interchange in business-to-business environments.

    You may recall that the pureXML add-on feature pack is available for all DB2 9 data servers. Indeed, this can cause confusion since the DB2 XML Extender is shipped for free in DB2 9. You should consider the DB2 XML Extender as stabilized technology. In other words, it is no longer being enhanced and shouldn't be considered for most XML applications. The DB2 XML Extender's approach to storing XML is to shred the XML to relational tables or stuff it into a large object. When you use this technology to persist XML data, you have to make serious trade-offs with respect to performance, flexibility, and so on. In addition, you have to use specialized functions to implement Spathe searches, and data types are abstracted from base DB2 data types. Quite simply, the way you interact with the DB2 XML Extender isn't natural for XML programmers and DBAs alike.

    In contrast, the pureXML feature in DB2 9 provides services such that no compromises between flexibility (what XML was designed for) and performance (one of the reasons why you want the data server to store your XML) need to be made when storing your XML data. For example, to generate XML documents from relational tables, you simple use the SQL/XML API instead of the cumbersome DB2 XML Extender functions. You can validate XML documents against Sods instead of only document type definitions (Ds) as is the case with the DB2 XML Extender, and more. We strongly recommend this feature for most of your XML-based applications.


    DB2 tools and products for Linux, UNIX and Windows: The basics | killexams.com real questions and Pass4sure dumps

    The following is a book excerpt from DB2 9 for Linux, UNIX, and Windows: DBA Guide, Reference, and Exam Prep, 6th Edition, by George Baklarz and Paul Zikopoulos. It is reprinted here with permission from International Business Machines Corporation; Copyright 2008. Read the chapter excerpt below to learn about the basics of DB2 tools and products or download a free .pdf of this chapter: "DB2 tools and products for Linux, UNIX and Windows: The basics."

    In this chapter you will be introduced to the DB2 family of products that run on the Linux, UNIX, and Windows operating systems. This version of DB2 is often referred to as the distributed version to differentiate it from the DB2 for z/OS® version that runs on an IBM mainframe.

    DB2 has the ability to store all kinds of electronic information. This includes traditional relational data, data encoded within XML as well as structured and unstructured binary information, documents and text in many languages, graphics, images, multimedia (audio and video), information specific to operations like engineering drawings, maps, insurance claims forms, numerical control streams, or any type of electronic information. This chapter illustrates some of the ways to access data in a DB2 database using some of the interfaces provided within the DB2 family. A description of each of the DB2 products are provided to illustrate some of DB2's features and functions.

    Information as a Service

    The DB2 Data Server is an important part of IBM's Information as a Service software portfolio that serves as the atomic level for the broader IBM On Demand architecture.

    Figure 1-1 IBM Service Framework for an On Demand business

    In Figure 1–1 you can see that the IBM software portfolio has really evolved into a collection of high value services provided by various IBM software portfolio offerings. The backbone fabric of this IBM reference architecture is the Enterprise Service Bus (ESB) that is used to facilitate communications across this rich set of services.

    IT Service Management is mostly provided by various Tivoli® products. The Tivoli portfolio is built around four key disciplines or pillars:

  • Security Management
  • Storage Management
  • Performance and Availability
  • Configuration and Operations
  • Services from these pillars can be used to collectively manage your entire IT framework. For example, Tivoli Storage Resource Manager services can be used enterprise-wide to monitor and report on heterogeneous storage resources to increase storage utilization, identify and resolve potential problems, and ensure application availability through policy-based automation.

    Development Services are the culmination of various Rational-based products that are built on the open source Eclipse platform. For example, Rational® ClearCase® provides source control services, and Rational Application Development empowers application developers with a rich set of services that can be used to develop applications, Web pages, and extended custom services for implementation in a Services Oriented Architecture (SOA) or loosely coupled application framework.

    Services that enable interaction are typically part of the Lotus® suite of products that enhance collaboration and idea sharing across the enterprise and beyond. Products like Lotus Sametime® Connect can be used for messaging and more.

    A number of services in the framework illustrated in Figure 1-1 are provided by the WebSphere® portfolio. For example, a product like WebSphere Integration Developer helps you define business process flows in the standard Business Process Execution Language (BPEL), which are used to implement process services that in turn help you define, orchestrate, and automate business policies. The Enterprise Service Bus (ESB) is provided by the WebSphere ESB product that provides your enterprise services with transformation, transport switching, and routing remediation among other services. Perhaps the most famous product of the WebSphere brand is the WebSphere Application Server that provides a runtime framework for J2EE®-based operations that are part of the Infrastructure Services component.

    Finally there's the Information Services which represent the superset of the capabilities you'll learn about in this book. The specific set of services that are typically found in this part of the IBM reference architecture are shown in Figure 1-2.

    Figure 1-2 IBM Information Services defined

    The services shown to the right in Figure 1-2 are hierarchical in nature. In other words, as you work from bottom to top, the services provided become richer and more business oriented.

    For example, Master Data Management services are provided by the WebSphere Product Center and WebSphere Customer Center products. Master data are facts that describe your core business entities: customers, suppliers, partners, products, bill of materials, employees, and so on. The discipline of Master Data Management seeks to decouple master information from individual applications spread across the enterprise and create a central, application independent, resource. The end result is a simplification of ongoing integration tasks and new application development. This discipline addresses key issues such as data quality and consistency proactively rather than "after the fact"; for example, in a data warehouse (a lower service in this taxonomy). There is also a set of entity resolution services that fit within the Master Data Management service tier.

    Business Intelligence services are provided by the DB2 Data Warehouse editions that you'll learn more about later in this chapter. Content Manager services are provided by the set of Content Management products and are used for document management, archiving, regulatory retention, and are a basis by which unstructured information (such as FAXes, video, voicemail, and so on) can be searched and folded into the information asset.

    Information Integration services seek to provide enterprises with ways to share, place, publish, cleanse, and enrich data found in the lower-level data management services. WebSphere Federation Server and its parent WebSphere Information Server are two such products that help implement these services.

    Finally, the Data Management services tier is the foundation upon which the other services are built. IBM has a number of data servers that fit into this tier, including DB2, Informix®, IBM Cloudscape™, U2, and IMS™.

    This book is specifically about DB2 in this service tier. Specifically, you'll learn how DB2 can provide any number of the high-value data-centric services shown in Figure 1-3.

    Figure 1-3 The data services provided by DB2, the focus of this book

    For more information on the entire IBM software portfolio and how they are mapped to the illustrated services shown Figures 1-1 and 1-2, refer to the IBM Web site at www.ibm.com for more details.

    The DB2 family of data servers executes on Windows, Linux (which can be run on the entire spectrum of IBM's hardware: System i™, System z™, System x™, and System p™), Solaris™ (both SPARC®-based and Intel®/AMD™-based installations), HP-UX™ (both PA-RISC™-based and Itanium-based installations), i5/OS®, VSE/VM, z/OS, and on pervasive platforms (like Windows Mobile Edition, Blue- Cat® Linux, Symbian®, Palm OS®, J2ME® platforms like the RIM® lackberry®, and more).

    The DB2 code base is optimized for each platform to ensure maximum performance and integration. DB2 for Linux, UNIX, and Windows shares about a 98 percent common code base with platform-specific optimizations at the operating system interface (OSI) level (Figure 1-4).

    This means that once you've learned how to administer a DB2 for AIX system, for the most part you'll know how to manage DB2 for Linux or DB2 for Windows; this is the reason why there is a single DB2 certification for all the distributed platforms.

    Figure 1-4 The DB2 code for Linux, UNIX, and Windows is virtually the same

    DB2 for i5/OS and DB2 for z/OS are optimized for their respective environments. For example, DB2 for z/OS is based on a shared-everything disk architecture where the hardware-assisted Coupling Facility is used to serialize access to the shared disk. No such hardware exists for Linux, UNIX, and Windows, and therefore DB2 on these platforms uses a shared-nothing architecture. For this reason, administration tends to vary between these platforms (though many concepts and features are similar). However, the SQL API is 98% common to all the platforms where DB2 runs, allowing applications written on one platform to be easily ported to another. This means that you can build an application on DB2 for Windows and port it effortlessly to DB2 for z/OS. If you build your application according to the SQL Reference for Cross-Platform Development handbook, your application will be 100% portable across the DB2 family.

    There are other synergies among DB2 running on Linux, UNIX, and Windows, as well as the other DB2 family members. For example, the JDBC driver used for DB2 for z/OS is exactly the same code as is used for DB2 for Linux, UNIX, and Windows. So while there may be variations in specific data definition language (DDL)-based tasks, the data manipulation language (DML) and client APIs are similar.

    The DB2 for Linux, UNIX, and Windows Data Server

    In the distributed environment, DB2 is available in a number of different packaging options, called editions. Furthermore, DB2 is also available as part of other packages that contain additional features and tooling rather than just the base data services provided by DB2.

    The mainstream DB2 editions are shown in Figure 1-5:

    Figure 1-5 The distributed DB2 family

    For the most part, each edition builds on its child in this hierarchy. For example, if a feature or functionality is available in DB2 Workgroup Edition, it's likely that it's also a part of a higher-level edition, like DB2 Enterprise Edition.

    DB2 Everyplace Edition

    DB2 Everyplace (DB2e) is a tiny "fingerprint" database that's about 350K in size. It is designed for low-cost, low-power, small form-factor devices such as personal digital assistants (PDAs), handheld personal computers (HPCs), and embedded devices. DB2e runs on a wide variety of handheld devices, with support for Palm OS 5.x, Windows Mobile 2003 for Pocket PC, Windows Mobile 2005 for Pocket PC, Windows CE.NET, traditional Windows desktop platforms, Symbian OS Version 7/7s, QNX® Neutrino® 6.2, Linux distributions running with the 2.4 or 2.6 kernel, embedded Linux distributions (like BlueCat) running with the 2.4 or 2.6 kernel, and more.

    The SQL API used to develop DB2e applications is a subset of that used for building full-fledged DB2 data server applications. This means that enterprise applications, for the most part, can be easily extended to include mobile devices. More importantly, it means that if you have DB2 skills, you have DB2e skills. In addition, DB2e is extremely flexible for developers, with support for Open Database Connectivity (ODBC), Java Database Connectivity (JDBC), .NET (including the ADO.NET 2.0 API), and the DB2 Call Level Interface (CLI) APIs.

    DB2e is a very simple-to-use data server that requires virtually no maintenance. Typical database administrator (DBA) operations like reorganizations and statistics collection are all performed automatically. Another nice thing about developing DB2e applications is that the database engine is platform independent, so it provides flexibility: You can seamlessly move DB2e databases between devices. For example, you could move a DB2e database populated on a Pocket PC device to a Symbian smartphone, or whatever other supported device you have, without the need to do anything. This feature, coupled with the rich support for application development, enables developers to quickly build, deploy, and support mobile applications on all platforms.

    DB2e is available in two editions: DB2 Everyplace Database Edition (DB2e DE) and DB2 Everyplace Enterprise Edition (DB2e EE). The database component of DB2e DE is the same as DB2e EE; however, DB2e DE has no synchronization middleware to extend or synchronize data to back-end enterprise data servers (although it does come with command line-based import and export utilities). DB2e DE is primarily used for applications that require an embedded database or a local relational storage facility that is exposed to endusers through some sort of application (they never really see the database) yet have stringent footprint requirements because of the device.

    DB2e EE distinguishes itself from DB2e DE in that it comes with a data synchronization component called the DB2e Synchronization Server (DB2e Sync Server). The DB2e Sync Server allows you to manage subscriptions and security controls for data that is distributed wirelessly to your hand-held devices and manage data changes on the client devices back into the data center. The DB2e Sync Server also comes with facilities for conflict resolution, application deployment, device identification controls, management policies, and more.

    The DB2e Sync Server can synchronize DB2e and Apache Derby/IBM Cloudscape data servers with back-end JDBC-enabled compliant data servers (for example, DB2, Oracle, Informix, SQL Server™, and so on). In addition, there is a special DB2 family synchronization adapter that uses the Data Propagator™ (DPROPR) SQL-based replication technology (which is included in the distributed version of DB2).

    The number of concurrent synchronizations that the DB2e Sync Server can support is dependent on the hardware configuration of that server, the associated workload, and data change rates. If you need to scale to handle very large concurrent synchronizations, you can install any Java application server (like IBM WebSphere Application Server). DB2e also supports enhanced scalability and high-availability through its support for DB2e Sync Server farm configurations that allow you to cluster a number of DB2e Sync Servers to provide load balancing and high-availability services.

    Figure 1-6 A DB2e Enterprise Edition environment

    In Figure 1-6 you can see the flow of data in a DB2e EE environment. For example, data is pulled from a database in Tier 3 (the far right of the figure) and placed on a mobile device in Tier 1 (the far left). Tier 1 is typically composed of occasionally connected clients that operate on data and then use the services provided by Tier 2 (the middle of the figure where the DB2e Sync Server resides) to push those changes back to Tier 3. Tier 2 handles issues like conflict remediation and subscription management to ensure that the data quality is maintained throughout its lifecycle until it's at rest.

    Apache Derby/IBM Cloudscape

    In 2005, IBM donated $85 million worth of relational database management system (RDBMS) code to the open source community, and the Apache Derby database was born. Apache Derby and IBM Cloudscape are the same databases; the difference is that IBM Cloudscape is sold by IBM with IBM's award-winning 24*7 support and has some add-on features as well.

    If you hadn't heard of IBM Cloudscape before the donation news, you'll probably be surprised to learn how many partners, customers, and software packages use this data server. In fact, more than 80 different IBM products use the IBM Cloudscape data server for its portability, easy deployment, open standards-based Java engine, small footprint, and more. IBM Cloudscape is a component that is transparent to products such as WebSphere Application Server, DB2 Content Manager, Web- Sphere Portal Server, IBM Director, Lotus Workplace, and many others.

    IBM Cloudscape is a Java-based RDBMS that has a 2MB footprint. It's compatible with DB2, supports advanced functions (such as triggers and stored procedures), is easy to deploy, and requires no DBA effort. These same characteristics hold true for the open source Apache Derby as well.

    We chose to include the Apache Derby/IBM Cloudscape data servers in this discussion because their SQL API is 100% compatible with the DB2 data server editions in Figure 1–5. This means that you can take any Apache Derby/IBM Cloudscape database and application and move it to a full-fledged DB2 data server if you need more scalability, or you need to take advantage of features that aren't found in these data servers. In fact, a component of DB2 9, called the DB2 Developer Workbench, provides a built-in facility to migrate Apache Derby/IBM Cloudscape schemas and data to a DB2 data server.

    DB2 Personal Edition

    DB2 Personal Edition (DB2 PE) is a full-function database that enables single users to create databases on their workstations. Since it's limited to single users (it doesn't support inbound client request for code), it's generally not referred to as a data server (although the DB2 engine behind DB2 PE is that same DB2 engine for all editions in Figure 1-5). This product is only available on Linux and Windows. DB2 PE can also be used as a remote client to a DB2 data server. Applications written to execute on DB2 PE are fully portable to the higher-level editions of the DB2 family in Figure 1-5.

    DB2 PE is often used by end users requiring access to local and remote DB2 databases, or developers prototyping applications that will be accessing other DB2 databases. In addition, since it includes the pureXML™ technology free of charge, DB2 PE is also a good choice for those looking to acquire DB2 9 pureXML skills. In many cases, because it includes replication features, DB2 PE is used for occasionally connected applications (like field research, sales force automation, and so on) where a richer feature set is required than what's offered by DB2e or Apache Derby/IBM Cloudscape.

    More information about IBM DB2


    The long, slow death of commercial Unix | killexams.com real questions and Pass4sure dumps

    In the 1990s and well into the 2000s, if you had mission-critical applications that required zero downtime, resiliency, failover and high performance, but didn’t want a mainframe, Unix was your go-to solution.

    If your database, ERP, HR, payroll, accounting, and other line-of-business apps weren’t run on a mainframe, chances are they ran on Unix systems from four dominant vendors: Sun Microsystems, HP, IBM and SGI. Each had its own flavor of Unix and its own custom RISC processor. Servers running an x86 chip were at best used for file and print or maybe low-end departmental servers.

    Today it’s a x86 and Linux world, with some Windows Server presence. Virtually every supercomputer on the Top 500 list runs some flavor of Linux and an x86 processor. SGI is long gone. Sun lived on for a while through Oracle, but in 2018 Oracle finally gave up. HP Enterprise only ships a few Unix servers a year, primarily as upgrades to existing customers with old systems. Only IBM is still in the game, delivering new systems and advances in its AIX operating system.

    We aren’t going to dwell on how we got here. Instead, this is a look at where commercial Unix is going, and how and when it will eventually die. (Note: We're specifically talking about the decline of commercial Unix. Still flourishing are the free and open-source variants such as FreeBSD, which was born out of the Berkeley Software Development (BSD) project at the University of California, Berkeley, and GNU.)

    Unix's slow decline

    Unix’s decline is “more of an artifact of the lack of marketing appeal than it is the lack of any presence,” says Joshua Greenbaum, principal analyst with Enterprise Applications Consulting. “No one markets Unix any more, it’s kind of a dead term. It’s still around, it’s just not built around anyone’s strategy for high-end innovation. There is no future, and it’s not because there’s anything innately wrong with it, it’s just that anything innovative is going to the cloud.”

    “The UNIX market is in inexorable decline,” says Daniel Bowers, research director for infrastructure and operations at Gartner. “Only 1 in 85 servers deployed this year uses Solaris, HP-UX, or AIX. Most applications on Unix that can be easily ported to Linux or Windows have actually already been moved.”

    Most of what remains on Unix today are customized, mission-critical workloads in fields such as financial services and healthcare. Because those apps are expensive and risky to migrate or rewrite, Bowers expects a long-tail decline in Unix that might last 20 years. “As a viable operating system, it’s got at least 10 years because there’s this long tail. Even 20 years from now, people will still want to run it,” he says.

    unix server sales GartnerGartner

    Gartner tracks the decline of new Unix sales.

    Gartner doesn’t track install base, just new sales, and the trend is down. In Q1 of 2014, Unix sales totaled $1.6 billion. By Q1 of 2018, sales were at $593 million. In terms of units, Unix sales are low, but they are almost always in the form of high-end, heavily decked-out servers that are much larger than your typical two-socket x86 server.

    IBM the last UNIX man standing

    It’s remarkable how tight-lipped people are over the state of Unix. Oracle and HPE declined to comment, as did several IBM customers. IBM is still in the game, but Bowers notes, “I see IBM investing $34 billion in Red Hat, but I don’t see IBM investing $34 billion in AIX.”

    Steve Sibley, vice president of cognitive systems offerings at IBM, acknowledges the obvious but says IBM will still have a substantial number of clients on AIX in ten years, with the majority of clients being large Fortune 500 clients. He adds that there will also be a stable number of midrange customers in some ways “because they don’t want to spend the investment to get off AIX.”

    Rob McNelly, senior AIX solutions architect at Meridian IT, a services provider and heavy AIX user, says there is an 80/20 rule for new applications for AIX: 80% of customers don’t grow their AIX footprint, but 20% stays and expands in AIX.

    “Because 20% is the larger enterprise systems, it is a very big segment. In healthcare, many stable tier 1 production environments continue to invest and enjoy the stability and security of AIX. Established and embedded ERP systems do likewise at all layers,” McNelly says.

    Many new applications pursue Linux, which



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