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With the launch of DB2 10.1, big Blue is adding a slew of latest facets that make DB2 extra advantageous for up to date, huge-statistics workloads.
reckoning on how you need to count it, IBM is either the world's quantity-two or quantity-three seller of database administration systems, and it has loads of secondary programs and services business which are pushed off its DB2 databases.
be aware that they stated DB2 databases. IBM has three different DB2s, now not just one. there's DB2 for the mainframe, DB2 for its midrange IBM i (formerly OS/four hundred) platform, and DB2 for Linux, Unix, and home windows structures.
it is the latter one, regularly occurring from time to time as DB2 LUW, that become revved up to the ten.1 unlock level on Tuesday. Concurrent with the database upgrade, IBM is additionally upgrading its InfoSphere Warehouse – a superset of DB2 designed for facts warehousing and OLAP serving – to the 10.1 degree.
At a really high degree, explains Bernie Spang, director of product approach for database software and methods at IBM, the DB2 10.1 unencumber is concentrated on two issues: the challenge of dealing with huge records, and automating more of "the drudgery of the mechanics of the facts layer" in purposes.
The replace to DB2 and InfoSphere Warehouse, which both ship on April 30, is the fruits of four years of development by way of a whole bunch of engineers working around the world from IBM's software labs. the brand new database also has several performance enhancements, a brand new facts-compression system, and expanded compatibility with Oracle databases to help inspire Oracle retail outlets to make the leap.
On the massive-statistics entrance, IBM has juiced the connector that links DB2 to Hadoop MapReduce clusters running the Hadoop allotted File device (HDFS). Spang says that the prior Hadoop connector turned into "rudimentary", and so coders went lower back to the drafting board and created a far better one which makes it possible for for statistics warehouses to extra with no trouble suck in information from and spit out records to Hadoop clusters, with much less work on the a part of database admins.
IBM's DB2 10 versus InfoSphere Warehouse 10 (click to magnify)
the brand new DB2 additionally helps the storing of graph triples, that are used to do relationship analytics, or what is occasionally known as graph analytics.
instead of looking through a mountain of statistics for certain subsets of suggestions, as you do in a relational database or a Hadoop cluster, graph analytics walks you via all of the viable combinations of statistics to look how they are connected. The links between the statistics are what's important, and these are always proven graphically the use of wire diagrams or different methods – therefore the identify graph analysis.
Graph records is saved in a unique structure referred to as useful resource Definition Framework (RDF), and also you question a knowledge store with this facts the use of a query language referred to as SPARQL.
The Apache Jena undertaking is a Java framework for constructing semantic web purposes in keeping with graph facts, and Apache Fuseki is the SPARQL server that strategies the SPARQL queries and spits out the relationships in order that they can also be visualized in some vogue. (Cray's new Urika equipment, announced in March, runs this Apache graph analysis stack on precise of a massively multithreaded server.)
just like they imported objects and XML into the DB2 database so they may well be indexed and processed natively, IBM is now bringing within the RDF layout so that graph triples can be stored natively.
As IBM explains it – not strictly grammatically, to a few English majors – a triple has a noun, a verb, and a predicate, akin to Tim (noun) has received (verb) the MegaMillions lottery (predicate). that you could then question all features of a collection of triples to look who else has won MegaMillions – a brief checklist, during this case.
In tests amongst DB2 10.1 early adopters, purposes that used these graph triples ran about 3.5 instances quicker on DB2 than on the Jena TDB statistics save (brief for triple database, most likely) with SPARQL 1.0 hitting it for queries.
DB2 10.1 for Linux, Unix, and home windows structures also includes temporal common sense and analysis features that enable it to do "time shuttle queries" – features that IBM introduced to the mainframe variant of DB2 remaining 12 months. by now aiding native temporal records codecs internal the database, you could do AS OF queries in the past, current, and future across datasets with no need to bolt this onto the side of the database.
"This dramatically reduces the quantity of software code to do bi-temporal queries," says Spang, and you'll do it with SQL syntax, too. you could flip time commute query on or off for any desk internal the DB2 database to do old or predictive analysis across the statistics units. RDF file format and SPARQL querying can be found throughout all variants of DB2 10.1.
Like other database makers, IBM is fixated on statistics compression innovations now not simplest to in the reduction of the quantity of physical storage consumers deserve to put under their databases, but additionally to pace up performance. With DB2 9.1, IBM brought desk compression, and with the more contemporary DB2 9.7 from a few years lower back, transient space and indexes were compressed.
With DB2 10.1, IBM is adding what it calls "adaptive compression", which means making use of information row, index, and temp compression on the fly as most closely fits the wants of the workload in query.
In early checks, purchasers noticed as tons as an 85 to ninety per cent discount in disk-capacity necessities. Adaptive compression is developed into DB2 superior business Server version and commercial enterprise Developer edition, but is an add-on for an extra fee for enterprise Server version.performance boosts, administration automation
On the performance entrance, IBM's database hackers have tweaked the kernel of the database to make stronger use of the parallelism in the multicore, multithreaded processors that are regular nowadays, with particular efficiency enhancements for hash joins and queries over superstar schemas, queries with joins and kinds, and queries with aggregation.
Out of the box, IBM says that DB2 10.1 will run up to 35 per cent quicker than DB2 9.7 on the same iron. With the entire records compression grew to become on, many early purchasers are seeing a factor of three more advantageous efficiency from their databases. Which means – sorry, techniques and know-how community – many DB2 customers are going to be able to get more desirable efficiency without having to purchase new iron.
On the administration front, DB2 now has built-in workload administration aspects that can cap the percent of complete CPU means that DB2 is allowed to devour, with difficult limits and delicate limits across varied CPUs which are sharing skill. that you would be able to also prioritize crucial DB2 workloads with distinct courses of carrier stage agreements.
Database indexes now have new points equivalent to soar scan, which optimizes buffer usage in the underlying equipment and cuts down on the CPU cycles that DB2 eats, as well as sensible prefetching of index and data to boost the performance of the database, plenty as L1 caches in chips do for his or her processors.
DB2 now also has a multi-temperature facts administration characteristic that knows the change between flash-primarily based SSDs, SAS RAID, SATA RAID, and tape or disk archive, and might automagically flow database tables which are sizzling, heat, bloodless, and downright icy to the correct equipment.
entry control is a huge deal, and DB2 10.1 now activities exceptional-grained row and column access controls so each user coming into a equipment can be locked out of any row or column of records. Now, personnel simplest see the records they need to know, and you will not have to partition an utility into diverse classes of clients. You simply do it on the user level in keeping with database guidelines. This function masks simply the data you are not supposed to see.
IBM continues to ramp up its compatibility with Oracle's PL/SQL question language for its eponymous databases, and says that with the 10.1 release, early access clients are seeing a standard of 98 per cent compatibility for Oracle PL/SQL queries working against DB2. it is not a hundred per cent, but it is getting closer.
ultimately, as far as massive elements go, the other new one is known as "continual records ingest", which makes it possible for for exterior statistics feeds to continually pump statistics into the database, or for the database to normally pump into the information warehouse, without interrupting queries running on both container. This ingesting depends on bringing the statistics into the database and warehouse in a parallel fashion, with distinctive connections, but precisely how it works is not clear to El Reg as they go to press. It appears a bit of like magic.
DB2 express-C is free and has the time travel function; it's capped at two processor cores and 4GB of leading reminiscence. DB2 specific provides the row and column entry control, label access control (an existing characteristic) excessive availability clustering facets (new with this release), and has a memory cap of 8GB and can run across 4 processor cores; it costs $6,490 per core.
Workgroup Server boosts the cores to 16 and the memory to 64GB, and does not have the HA points. commercial enterprise Server has the multi-temperature information management characteristic and charges $30,660 per core. The true-conclusion superior enterprise Server has all of the bells and whistles, including optimizations and equipment to make DB2 play improved in a data warehouse. Pricing for the Workgroup Server and advanced business Server had been now not available at press time. ®
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Synergy is vital to a DBA. all through their day, they work towards consequences that are more desirable than the sum of the particular person projects. When DB2 10 for LUW became launched these days, I decided that synergy became critical when it got here to working towards as neatly. happily, the timing of the unencumber of DB2 10.1 for LUW closely coincided with the foreign DB2 consumer community (www.idug.org) convention, held this year in Denver, Colorado. I knew from past experience that attending the conference would provide solid suggestions about the newest aspects of DB2, so I registered and decided to test my synergistic plan to maximise studying, leap beginning my direction to achieving DB2 10 certification and ensure that my skillset changed into mighty adequate to guide my client’s future needs.
right through the convention, i admire to spend my time taking note of the presenters and don’t want to be distracted by taking notes. regrettably, there are so many classes that it turns into a problem to keep all that counsel. So, this yr, I decided to maximize my time by using jotting down brief suggestions and key phrases during each and every session that could support me remember specific areas that i wished to assessment after the conference. Now that I’ve had a while to consolidate these brief notes, I’ve get a hold of ten advice for discovering DB2 10.
the primary five tips discuss learning coaching steps whereas tips six through ten determine 5 aspects in DB2 10 that should still be at the proper of the learning list.Tip #1: Attend IDUG Conferences and collect email Addresses
IDUG DB2 10 shows, which were given by clients, DB2 10 beta testers and IBM consultants, proved to be an ideal useful resource for my objectives. The sessions provided brief advice that facilitated invaluable researching brief cuts and allowed me to profit a groundwork of abilities with minimal own effort. Attending these classes made it appear that i was learning with the neatest youngster within the faculty moreover, I have the email handle for that wise child now in case I actually have questions after the convention.Tip #2: deploy the Product
Of route, potential needs to be translated into action or it can be quickly forgotten. fortunately, IBM has solved that problem for these of us who've limited practising budgets. there's now a new (and nonetheless free) version of DB2 10 categorical C, which will also be found right here: http://www.ibm.com/developerworks/downloads/im/udbexp/index.html. in case you prefer a virtual appliance as I do, which you could download that here: http://www.ibm.com/developerworks/wikis/monitor/im/IBM+virtual+appliances#IBMVirtualAppliances-db2Tip #three: download the Product Documentation
IBM has made it handy to get the product documentation. that you may down load particular pdfs or a zipper file of the entire set at http://www-01.ibm.com/assist/docview.wss?uid=swg27024478.Tip #four: examine ‘What’s New for DB2 version 10.1’
once you’ve downloaded the documentation, read the ‘What’s New’ pdf. With each and every release, I examine these from cover-to-cover to find out what i'd gain and what i might possibility via relocating from the latest free up to the newest product stage.
if you're setting up DB2 10 in a pristine atmosphere, this particular document is not as critical for you. however, when you are considering of upgrading to DB2 10 from an previous DB2 liberate, it's important that you just pay certain consideration to the chapters that discuss adjustments in addition to reviewing deprecated and discontinued functionality. within the latest document, this information is coated in element in part 2.Tip #5: Make pals with the Infocenter
When it comes to DB2, the researching useful resource i exploit most generally is the DB2 counsel middle (Infocenter). For DB2 10, the on-line version of the tips middle is http://pic.dhe.ibm.com/infocenter/db2luw/v10r1/index.jsp. a good function of the Infocenter provides the potential to set up "scopes" to filter the information back. for instance if i'm engaged on developing the Workload manager, i will be able to create a scope option to opt for best those issues that relate to my latest effort.
Tip #6: company Time shuttle
by means of a ways, one of the crucial interesting new facets with DB2 10.1 is the probability of time trip! unluckily, IBM hasn’t yet solved the time commute catch 22 situation for people, however DB2 10 for LUW introduces native aid for temporal records. One selected problem I often face requires that I design solutions round "helpful time". company time, also referred to as software time or valid time, coupled with some new SQL keywords offers a simple DB2 10.1 alternative to clear up that challenge.
enterprise time tables require three extra columns and an addition to the basic key. for example, if my company sold songs and i designed my pricing constitution in line with calendar dates with the 30 days after a release commanding a more robust cost and subsequent intervals offering a successively lessen expense, I might create a business time table like this:CREATE desk "LCKSMITH"."BUSINESS_PERIOD" ( "UNIQUE_ID" BIGINT not NULL , "SONG_ID" BIGINT no longer NULL , "fee" DECIMAL(8,2) now not NULL , "START_DATE" DATE now not NULL , "END_DATE" DATE no longer NULL , period BUSINESS_TIME ("START_DATE","END_DATE") ) IN "USERSPACE1" ; ALTER table "LCKSMITH"."BUSINESS_PERIOD" ADD basic KEY ("UNIQUE_ID", BUSINESS_TIME with out OVERLAPS);
using the BUSINESS_TIME devoid of OVERLAPS syntax disallows overlapping durations and ensures that values for the leisure of the keys are wonderful with appreciate to any period of BUSINESS_TIME. This enables me to automatically control ‘helpful’ date types of the facts. With this desk, i can return the rate of a tune for a particular advantageous date or a variety of dates.
to come back statistics from this desk, i can use a new SQL clause FOR BUSINESS_TIME with alternate options:As of <cost> From <value1> to <cost 2> Between <value1> and <value2>
The DB2 SQL Reference Volumes 1 and a pair of, that are protected in the product guide download (see link in tip #3) have more information about BUSINESS_TIME tables, together with all of the alternate options that may aid tailor a solution to your certain requirement.
word that DB2 10 uses an inclusive/unique approach for time periods, which ability that the detailed conclusion factor is the primary point in time when the given tips isn't any longer valid.Tip #7: equipment Time trip
IBM gave us no longer only 1 time commute option with DB2 10.1, however two. device time tables are superior for preserving old versions of facts and can be used to reply the age ancient question "What modified and when?"
using a system Time desk requires each a base desk and a history table. the base table will grasp probably the most existing tips and the heritage table will hang the ‘historic’ rows. DB2 will transparently use the heritage desk when vital to satisfy queries.
each the base and historic tables must have a beginning and ending timestamp and a duration distinct with the aid of the keyword SYSTEM_TIME. furthermore there is a hidden column it's generated via DB2 as a timestamp. the usage of my tune store as my instance, I may need a table that could seize old alterations to the royalty rate in order that I may have an audit trail. My base desk might appear to be this:CREATE table "LCKSMITH"."song" ( "id" INTEGER now not NULL , "SONG_NAME" VARCHAR(32) , "ROYALTY_PRICE" DECIMAL(10,2) , "SYS_START" TIMESTAMP(12) no longer NULL GENERATED all the time AS ROW begin , "SYS_END" TIMESTAMP(12) no longer NULL GENERATED at all times AS ROW end , "TRANS_ID" TIMESTAMP(12) IMPLICITLY HIDDEN GENERATED at all times AS TRANSACTION birth identification , duration SYSTEM_TIME ("SYS_START","SYS_END") ) IN "IBMDB2SAMPLEREL" ; ALTER desk "LCKSMITH"."song" ADD fundamental KEY ("identification");
To preserve the historical advice i will create a historical past desk, which i will identify MUSIC_HISTORY. On the MUSIC_HISTORY desk, despite the fact, i will not create the fundamental key on the grounds that there may also be multiple versions of the historic rows stored there. i'll also set the history table to APPEND ON for more advantageous performance and set avert ON DROP to avoid dropping access to my ancient assistance if the base table is dropped.$> db2 "create desk music_history like track with hinder on drop" $> db2 "alter table music_history append on"
i'll additionally alter the bottom table as follows:$> db2 "alter desk song add versioning use heritage desk music_history"
make certain to try the SQL Reference volumes mentioned above for suggestions on the brand new SQL constructs to help this functionality. if you are questioning if you can mix each enterprise and device time period counsel into a single table, the answer is "sure". look for the term bitemporal within the manuals.Tip #eight: Row and Column access manage (RCAC)
I struggled to wait this long to focus on security, but it surely become worth the wait. RCAC is new in DB2 10.1 and provides enormous energy to your records insurance plan arsenal. RCAC allows the SECADM the skill to subset the facts to enforce access with the aid of best those who should be aware of.
RCAC is used to create controlling rule permissions for rows and provides covering alternatives for columns devoid of the need of changing purposes to accommodate the superior security. unlike Label based access Controls, which might be designed to enable protections in line with facts hierarchies, RCAC gives a commonplace aim answer and is an awful lot easier to install.
To create row permissions, the SECADM first designs and then runs a CREATE PERMISSION on a table.
be aware that the default for the permit/DISABLE option is DISABLE. The outcomes of that selected clause is based on the present state of activation, so it is important to examine and be aware the documentation earlier than implementing. After the row permission work has been completed, the SECADM will then ALTER the table to set off the row access handle.
For column protection, DB2 10.1 gives us COLUMN mask. here's superb for columns that store totally delicate counsel, equivalent to SSN or account balances. using a CASE observation, the SECADM can provide options to masks the information and screen it handiest to appropriate users.
Taking a financial instance, the SECADM might are looking to provide column insurance plan so that most effective those that have a business should see the SSN, equivalent to mortgage managers, can be able to entry that information. Others who try to see the SSNs can be shown a null price. An illustration might possibly be:CREATE masks SSN_MASK ON ACCOUNT_HOLDER FOR COLUMN SSN RETURN CASE WHEN VERIFY_ROLE_FOR_USER(SESSION_USER, 'manager') = 1 THEN SSN ELSE NULL conclusion enable;
After the mask is created, the desk must be altered to make the column mask active.ALTER table ACCOUNT_HOLDER spark off COLUMN access manage;
One high-quality safety thought right here is that even users who cling DATAACCESS authority may also be avoided from gaining access to delicate facts due to RCAC. in line with the masks that was created for the ACCOUNT_HOLDER desk, right here’s an instance of a before and after test.
however the information remains there.
notice that I dangle DATAACCESS authority for the database and that after the mask is activated, i'm nonetheless avoided from seeing the SSN values as a result of i am not a member of the manager role.
here is just a small pattern of the vigour of RCAC. there's a major volume of additional information concerning RCAC in the product manuals and advice center to assist you get began.Tip #9: HADR Enhancements
HADR users might be chuffed to grasp that now, moreover the fundamental HADR standby, that you would be able to also have two auxiliary standbys. DB2 10 additionally added a new alternative of delayed replay for exact standby servers. i will see this functionality being very beneficial in instances where anything surprising has occurred that caused information corruption on the basic server. as an instance, if important facts was overwritten on the primary, with the log replay delayed, the ‘first rate’ information would still exist on the lagging standby allowing an easy facts healing choice. That functionality alone would make me believe an auxiliary standby. If that wasn’t adequate, HADR log spooling is a further new DB2 10 characteristic that can help stay away from performance concerns on the primary as a result of spikes in logging recreation on the standby.
There are some issues regarding auxiliary standbys. for instance, there isn't any automated takeover support for the auxiliary standbys as there's for the foremost standby. despite the fact, both role swap (swish) and Failover (when the simple has failed) manual takeover are supported and any of the standby databases can take over as simple.
As you can think about, there are some further setup steps and configuration changes which are crucial should you add auxiliary HADR standby servers. in keeping with what I learned at IDUG, whereas the configuration steps seem to be basic sufficient, it's vital to make certain they are appropriately completed to evade "orphans".
if you wish to learn extra about maximizing your use of standby databases, this DB2 9.7 article can also present some suggestions: https://www.ibm.com/developerworks/statistics/library/techarticle/dm-1205hadrstandby/index.htmlTip #10: Multi-Temperature records Storage
All statistics warehouse facts is not equal. a considerable number of categories of records can have different SLAs and therefore, distinctive storage necessities. whereas the time period multi-temperature storage has been in use for ages, just before DB2 10, effortlessly managing storage for multi-temperature warehouse environments required giant planning and coordination.
a significant design and storage problem is that facts warehouse information adjustments ‘temperature’ as it a long time. currently loaded information could be heavily accessed (hot) for reporting, but because it a long time, its historic importance, whereas still useful from the company point of view, may additionally no longer be as helpful for reporting and it cools to warm or bloodless. Add this dynamic to the proven fact that the quickest storage is probably the most expensive and it's effortless to look that as statistics ages, it has to be moved to less expensive instruments.
To handle this problem, DB2 10 provides new DDL alternate options which are used for developing, altering and losing storage organizations. These storage companies can also be defined to enable storage of statistics based on its preferred facts entry. faster media will also be defined to cling ‘scorching’ or commonly accessed facts, whereas slower media will also be assigned to storage businesses that hold less often accessed information.
desk spaces that use automatic storage should be associated to a storage group when created and/or altered and will automatically inherit the media attributes of the storage neighborhood. table spaces can then be moved online from one storage group to an extra as the statistics temperature alterations.
in case you need to be trained specifics about Multi-Temperature storage, there is a superb white paper on the subject matter. you can down load it from http://public.dhe.ibm.com/software/dw/records/dm-1205multitemp/DB2V10_Multi-Temperature_0412.pdfA Bonus Tip:
there is much extra to the DB2 LUW 10.1 unlock than is covered right here and, without doubt, my gaining knowledge of priorities may or may also not be akin to yours. I motivate you to put in force your personal synergistic method to gaining knowledge of about all of the first-rate features of DB2 10.1 and the price they can present your business.
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IBM this month introduced a brand new free up of DB2 connect, a piece of middleware used to join customer purposes operating on Linux, Unix, or windows structures to DB2 database servers operating on IBM i and z/OS. With DB2 connect version 10.1, IBM added help for DB2 for i version 7.1. It additionally delivered a couple of elements for taking merits of the newest enhancements to DB2 for z/OS.
DB2 connect permits client functions to create, entry, replace, control, and control DB2 databases on host methods using plenty of languages, including SQL, ODBC, JDBC, DB2 APIs, SQLJ DB2 call level Interface (CLI), .internet, Hypertext Preprocessor, Ruby, Python, Perl, and pureQuery. the most general use of the utility is serving SQL statements to DB2 on IBM i and z/OS programs, however can even be used to join tables from distinct DB2/400 databases, together with other DB2 models and Informix, and even Oracle, SQL Server, and Sybase when coupled with that top-quality big Blue statistics broker, WebSphere guidance Integrator.
The lone IBM i-connected enhancement in DB2 join 10.1 is a biggie: aid for DB2 for i operating on the newest IBM i edition 7.1 operating equipment, which shipped two years ago this month. Late help is more desirable than no support.
the bulk of the enhancements in DB2 connect 10.1 focal point on the various drivers to assist the newest capabilities in DB2 10 for z/OS platform, which IBM shipped in October 2010. This contains: binary XML aid in Java drivers; XML-linked performance boosts; aid for prolonged vector variables; temporal table guide; improved timestamp precision; and different performance and high availability enhancements.
This unlock additionally grants enhanced guide for IBM equipment, including WebSphere utility Server, Optim Configuration supervisor, and statistics Studio. Programmers will be chuffed to listen to DB2 connect 10.1 brings: new JDBC four.1 capabilities for Java 7; help for the .internet four.0 framework with Entity Framework; full integration with visual Studio 2010; and support for migrating functions from other database providers to DB2 for z/OS.
IBM has additionally transformed its various DB2 connect bundles, including shrinking the footprint of its records Server (DS) Driver bundle; streamlined activation of DB2 connect unlimited version for system z; and new gateway options.
corporations operating the advanced IBM pureQuery Runtime for Linux, Unix, and windows will see new protection elements, together with the skill to keep away from SQL injection with the aid of limiting the SQL finished with the aid of a particular utility to certain SQL statements. This free up additionally offers users the potential to transform dynamic SQL to static SQL, which improves efficiency and security.
DB2 connect 10.1 variations turn into obtainable June 11. For extra assistance on DB2 join 10.1, see IBM u.s. utility Announcement 212-076.
Raz-Lee Claims IBM i information-access leap forward with DB-Gate
DB2 connect receives greater help for saved tactics and Triggers
IBM officially broadcasts i/OS 7.1
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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.
Note - DB2 Connect is not required to access DB2 for any of the LUW platforms.
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.
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.
Note - In this chapter, the use of the term client with a lowercase c refers the DB2 client software in general, while an uppercase C refers to a specific DB2 client package.
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 http://www14.software.ibm.com/webapp/iwm/web/preLogin.do?lang=en_US&source=swg-dm-db2rtcl.
Note - The DB2 8 Runtime Client is very different from the DB2 9 Runtime Client. In DB2 8, there was a special client only available on Windows called the DB2 Runtime Client Lite. This client had a reduced footprint compared to the DB2 9 Runtime Client and didn't include tooling, documentation, and so on. The DB2 9 Runtime Client is analogous to the DB2 8 Runtime Client Lite, only is now available on all supported platforms.
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 1–10Accessing 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: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 http://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 http://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 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.
Note - If you are connecting to DB2 for Linux, UNIX, and Windows from a client running on a mainframe, you don't need DB2 Connect. DRDA AS functionality is built into DB2 data servers running on distributed platforms.
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.
Figure 1–11Using DB2 Connect is a single-tier or multi-tier environment
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.
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.
In this chapter you will be introduced to the DB2 family of products that run on the Linux, UNIX, and Windows operating systems.This chapter is from the book
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.
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.
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.
Figure 1-1 IBM Service Framework for an On Demand business
IT Service Management is mostly provided by various Tivoli® products. The Tivoli portfolio is built around four key disciplines or pillars:
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.
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, BlueCat® Linux, Symbian®, Palm OS®, J2ME® platforms like the RIM® Blackberry®, 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).
Figure 1-4 The DB2 code for Linux, UNIX, and Windows is virtually the same
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.
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.
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CompTIA [76 Certification Exam(s) ]
ComputerAssociates [6 Certification Exam(s) ]
Consultant [2 Certification Exam(s) ]
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Google [4 Certification Exam(s) ]
GuidanceSoftware [2 Certification Exam(s) ]
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HP [752 Certification Exam(s) ]
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Huawei [21 Certification Exam(s) ]
Hyperion [10 Certification Exam(s) ]
IAAP [1 Certification Exam(s) ]
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IBM [1533 Certification Exam(s) ]
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ICAI [1 Certification Exam(s) ]
ICDL [6 Certification Exam(s) ]
IEEE [1 Certification Exam(s) ]
IELTS [1 Certification Exam(s) ]
IFPUG [1 Certification Exam(s) ]
IIA [3 Certification Exam(s) ]
IIBA [2 Certification Exam(s) ]
IISFA [1 Certification Exam(s) ]
Intel [2 Certification Exam(s) ]
IQN [1 Certification Exam(s) ]
IRS [1 Certification Exam(s) ]
ISA [1 Certification Exam(s) ]
ISACA [4 Certification Exam(s) ]
ISC2 [6 Certification Exam(s) ]
ISEB [24 Certification Exam(s) ]
Isilon [4 Certification Exam(s) ]
ISM [6 Certification Exam(s) ]
iSQI [7 Certification Exam(s) ]
ITEC [1 Certification Exam(s) ]
Juniper [65 Certification Exam(s) ]
LEED [1 Certification Exam(s) ]
Legato [5 Certification Exam(s) ]
Liferay [1 Certification Exam(s) ]
Logical-Operations [1 Certification Exam(s) ]
Lotus [66 Certification Exam(s) ]
LPI [24 Certification Exam(s) ]
LSI [3 Certification Exam(s) ]
Magento [3 Certification Exam(s) ]
Maintenance [2 Certification Exam(s) ]
McAfee [8 Certification Exam(s) ]
McData [3 Certification Exam(s) ]
Medical [68 Certification Exam(s) ]
Microsoft [375 Certification Exam(s) ]
Mile2 [3 Certification Exam(s) ]
Military [1 Certification Exam(s) ]
Misc [1 Certification Exam(s) ]
Motorola [7 Certification Exam(s) ]
mySQL [4 Certification Exam(s) ]
NBSTSA [1 Certification Exam(s) ]
NCEES [2 Certification Exam(s) ]
NCIDQ [1 Certification Exam(s) ]
NCLEX [3 Certification Exam(s) ]
Network-General [12 Certification Exam(s) ]
NetworkAppliance [39 Certification Exam(s) ]
NI [1 Certification Exam(s) ]
NIELIT [1 Certification Exam(s) ]
Nokia [6 Certification Exam(s) ]
Nortel [130 Certification Exam(s) ]
Novell [37 Certification Exam(s) ]
OMG [10 Certification Exam(s) ]
Oracle [282 Certification Exam(s) ]
P&C [2 Certification Exam(s) ]
Palo-Alto [4 Certification Exam(s) ]
PARCC [1 Certification Exam(s) ]
PayPal [1 Certification Exam(s) ]
Pegasystems [12 Certification Exam(s) ]
PEOPLECERT [4 Certification Exam(s) ]
PMI [15 Certification Exam(s) ]
Polycom [2 Certification Exam(s) ]
PostgreSQL-CE [1 Certification Exam(s) ]
Prince2 [6 Certification Exam(s) ]
PRMIA [1 Certification Exam(s) ]
PsychCorp [1 Certification Exam(s) ]
PTCB [2 Certification Exam(s) ]
QAI [1 Certification Exam(s) ]
QlikView [1 Certification Exam(s) ]
Quality-Assurance [7 Certification Exam(s) ]
RACC [1 Certification Exam(s) ]
Real Estate [1 Certification Exam(s) ]
Real-Estate [1 Certification Exam(s) ]
RedHat [8 Certification Exam(s) ]
RES [5 Certification Exam(s) ]
Riverbed [8 Certification Exam(s) ]
RSA [15 Certification Exam(s) ]
Sair [8 Certification Exam(s) ]
Salesforce [5 Certification Exam(s) ]
SANS [1 Certification Exam(s) ]
SAP [98 Certification Exam(s) ]
SASInstitute [15 Certification Exam(s) ]
SAT [1 Certification Exam(s) ]
SCO [10 Certification Exam(s) ]
SCP [6 Certification Exam(s) ]
SDI [3 Certification Exam(s) ]
See-Beyond [1 Certification Exam(s) ]
Siemens [1 Certification Exam(s) ]
Snia [7 Certification Exam(s) ]
SOA [15 Certification Exam(s) ]
Social-Work-Board [4 Certification Exam(s) ]
SpringSource [1 Certification Exam(s) ]
SUN [63 Certification Exam(s) ]
SUSE [1 Certification Exam(s) ]
Sybase [17 Certification Exam(s) ]
Symantec [135 Certification Exam(s) ]
Teacher-Certification [4 Certification Exam(s) ]
The-Open-Group [8 Certification Exam(s) ]
TIA [3 Certification Exam(s) ]
Tibco [18 Certification Exam(s) ]
Trainers [3 Certification Exam(s) ]
Trend [1 Certification Exam(s) ]
TruSecure [1 Certification Exam(s) ]
USMLE [1 Certification Exam(s) ]
VCE [6 Certification Exam(s) ]
Veeam [2 Certification Exam(s) ]
Veritas [33 Certification Exam(s) ]
Vmware [58 Certification Exam(s) ]
Wonderlic [2 Certification Exam(s) ]
Worldatwork [2 Certification Exam(s) ]
XML-Master [3 Certification Exam(s) ]
Zend [6 Certification Exam(s) ]
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