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With the launch of DB2 10.1, gigantic Blue is adding a slew of recent points that accomplish DB2 greater constructive for modern, big-records workloads.
reckoning on how you are looking to matter it, IBM is either the area's quantity-two or quantity-three vendor of database administration techniques, and it has a lot of secondary methods and capabilities commerce which are pushed off its DB2 databases.
be vigilant that they spoke of DB2 databases. IBM has three diverse DB2s, now not only 1. there may exist DB2 for the mainframe, DB2 for its midrange IBM i (previously OS/400) platform, and DB2 for Linux, Unix, and home windows platforms.
it's the latter one, widespread once in a while as DB2 LUW, that become revved up to the ten.1 free up flat on Tuesday. Concurrent with the database upgrade, IBM is additionally upgrading its InfoSphere Warehouse – a superset of DB2 designed for information warehousing and OLAP serving – to the ten.1 level.
At a extremely immoderate degree, explains Bernie Spang, director of product strategy for database application and methods at IBM, the DB2 10.1 release is focused on two issues: the challenge of dealing with gigantic facts, and automating more of "the drudgery of the mechanics of the facts layer" in functions.
The update to DB2 and InfoSphere Warehouse, which each ship on April 30, is the culmination of four years of progress through hundreds of engineers working worldwide from IBM's software labs. the new database additionally has several performance enhancements, a brand new facts-compression method, and elevated compatibility with Oracle databases to aid inspire Oracle stores to accomplish the leap.
On the huge-facts front, IBM has juiced the connector that hyperlinks DB2 to Hadoop MapReduce clusters operating the Hadoop disbursed File gadget (HDFS). Spang says that the prior Hadoop connector changed into "rudimentary", and so coders went again to the drafting board and created a more robust one that permits for facts warehouses to more simply suck in data from and spit out facts to Hadoop clusters, with less labor on the a fraction of database admins.
IBM's DB2 10 versus InfoSphere Warehouse 10 (click to magnify)
the new DB2 additionally helps the storing of graph triples, which are used to achieve relationship analytics, or what's every so often called graph analytics.
rather than looking through a mountain of facts for selected subsets of tips, as you achieve in a relational database or a Hadoop cluster, graph analytics walks you through the entire viable combos of records to discern how they are linked. The links between the records are what is important, and these are always shown graphically using wire diagrams or other methods – therefore the identify graph evaluation.
Graph facts is stored in a different layout called useful resource Definition Framework (RDF), and besides you query a erudition shop with this records using a question language referred to as SPARQL.
The Apache Jena stint is a Java framework for constructing semantic internet functions based on graph information, and Apache Fuseki is the SPARQL server that techniques the SPARQL queries and spits out the relationships so they can besides exist visualized in some vogue. (Cray's new Urika system, announced in March, runs this Apache graph evaluation stack on suitable of a vastly multithreaded server.)
identical to they imported objects and XML into the DB2 database so they could exist indexed and processed natively, IBM is now bringing in the RDF format so that graph triples can besides exist kept natively.
As IBM explains it – not strictly grammatically, to a few English majors – a triple has a noun, a verb, and a predicate, similar to Tim (noun) has won (verb) the MegaMillions lottery (predicate). you can then question everything elements of a set of triples to peer who else has won MegaMillions – a brief checklist, in this case.
In checks among DB2 10.1 early adopters, purposes that used these graph triples ran about three.5 times quicker on DB2 than on the Jena TDB information shop (brief for triple database, presumably) with SPARQL 1.0 hitting it for queries.
DB2 10.1 for Linux, Unix, and home windows platforms besides contains temporal logic and analysis functions that enable it to achieve "time trip queries" – features that IBM brought to the mainframe variant of DB2 final yr. by using now supporting endemic temporal records codecs internal the database, that you would exist able to achieve AS OF queries in the past, latest, and future across datasets without having to bolt this onto the facet of the database.
"This dramatically reduces the quantity of application code to achieve bi-temporal queries," says Spang, and you can achieve it with SQL syntax, too. that you would exist able to spin time commute query on or off for any desk inner the DB2 database to achieve historic or predictive evaluation throughout the data units. RDF file layout and SPARQL querying can exist establish across everything versions of DB2 10.1.
Like other database makers, IBM is fixated on facts compression options now not only to gash back the quantity of physical storage valued clientele deserve to reserve under their databases, however besides to pace up performance. With DB2 9.1, IBM added table compression, and with the greater concomitant DB2 9.7 from a number of years lower back, brief area and indexes had been compressed.
With DB2 10.1, IBM is including what it calls "adaptive compression", which capacity applying facts row, index, and temp compression on the Fly as best suits the wants of the workload in query.
In early tests, valued clientele saw as much as an eighty five to 90 per cent discount in disk-capability necessities. Adaptive compression is built into DB2 superior commercial enterprise Server edition and commercial enterprise Developer edition, but is an add-on for an further freight for enterprise Server edition.performance boosts, administration automation
On the performance entrance, IBM's database hackers fill tweaked the kernel of the database to accomplish more suitable exercise of the parallelism in the multicore, multithreaded processors which are unvarying today, with specific efficiency enhancements for hash joins and queries over superstar schemas, queries with joins and kinds, and queries with aggregation.
Out of the container, IBM says that DB2 10.1 will race as much as 35 per cent quicker than DB2 9.7 on the equal iron. With the entire data compression became on, many early consumers are seeing a factor of three more desirable efficiency from their databases. Which capability – sorry, methods and technology community – many DB2 shoppers are going to exist able to bag greater efficiency with no necessity to purchase new iron.
On the administration front, DB2 now has integrated workload administration features that may cap the percentage of complete CPU potential that DB2 is allowed to consume, with tough limits and smooth limits throughout varied CPUs that are sharing skill. that you would exist able to additionally prioritize essential DB2 workloads with different classes of carrier degree agreements.
Database indexes now fill new points reminiscent of start scan, which optimizes buffer usage within the underlying system and cuts down on the CPU cycles that DB2 eats, as well as smart prefetching of index and records to raise the performance of the database, a lot as L1 caches in chips achieve for their processors.
DB2 now besides has a multi-temperature facts management feature that knows the inequity between flash-primarily based SSDs, SAS RAID, SATA RAID, and tape or disk archive, and may automagically scuttle database tables that are hot, warm, cold, and downright icy to the commandeer equipment.
access manipulate is a gigantic deal, and DB2 10.1 now activities exceptional-grained row and column access controls so each and every consumer coming right into a gadget can besides exist locked out of any row or column of records. Now, personnel handiest discern the statistics they deserve to know, and you shouldn't fill to partition an utility into sever classes of clients. You simply achieve it at the consumer degree in keeping with database guidelines. This characteristic masks simply the information you are not alleged to see.
IBM continues to ramp up its compatibility with Oracle's PL/SQL query language for its eponymous databases, and says that with the ten.1 free up, early entry clients are seeing a regular of ninety eight per cent compatibility for Oracle PL/SQL queries working in opposition t DB2. that is not one hundred per cent, however it is getting nearer.
eventually, so far as massive points go, the different new one is known as "continuous records ingest", which allows for for external statistics feeds to at everything times pump records into the database, or for the database to perpetually pump into the records warehouse, without interrupting queries running on either field. This ingesting depends on bringing the statistics into the database and warehouse in a parallel vogue, with dissimilar connections, however exactly how it works isn't pellucid to El Reg as they Go to press. It seems a bit dote magic.
DB2 specific-C is free and has the time commute function; it is capped at two processor cores and 4GB of leading memory. DB2 specific adds the row and column access handle, label entry manage (an existing characteristic) towering availability clustering elements (new with this release), and has a reminiscence cap of 8GB and can race across 4 processor cores; it prices $6,490 per core.
Workgroup Server boosts the cores to 16 and the reminiscence to 64GB, and does not fill the HA elements. commercial enterprise Server has the multi-temperature records administration characteristic and fees $30,660 per core. The appropriate-conclusion advanced commercial enterprise Server has everything of the bells and whistles, together with optimizations and materiel to accomplish DB2 play better in a erudition warehouse. Pricing for the Workgroup Server and advanced commerce Server had been not purchasable at press time. ®
backed: fitting a realistic safety chief
Synergy is vital to a DBA. everything through their day, they labor toward effects which are superior than the sum of the individual tasks. When DB2 10 for LUW turned into released currently, I determined that synergy become vital when it got here to working towards as well. fortunately, the timing of the unlock of DB2 10.1 for LUW closely coincided with the international DB2 user neighborhood (www.idug.org) convention, held this year in Denver, Colorado. I knew from past event that attending the conference would provide tough guidance in regards to the newest points of DB2, so I registered and decided to check my synergistic procedure to maximise getting to know, bounce birth my direction to attaining DB2 10 certification and validate that my skillset was mighty enough to aid my customer’s future needs.
all through the convention, i admire to expend my time paying attention to the presenters and don’t want to exist distracted by taking notes. lamentably, there are such a lot of sessions that it becomes a challenge to preserve everything that suggestions. So, this yr, I determined to maximize my time through jotting down brief suggestions and keyword phrases everything the route through each and every session that could assist me tolerate in intellect specific areas that i wished to evaluate after the conference. Now that I’ve had a while to consolidate these quick notes, I’ve bag a hold of ten information for getting to know DB2 10.
the first 5 advice focus on studying guidance steps whereas information six via ten investigate five features in DB2 10 that should exist at the desirable of the gaining erudition of checklist.Tip #1: Attend IDUG Conferences and bring together e mail Addresses
IDUG DB2 10 shows, which were given by using users, DB2 10 beta testers and IBM consultants, proved to exist an exemplar resource for my objectives. The periods supplied brief information that facilitated useful studying short cuts and allowed me to profit a basis of erudition with minimal own effort. Attending these classes made it appear that i was studying with the smartest youngster within the school moreover, I fill the email address for that smart child now in case I fill questions after the conference.Tip #2: set up the Product
Of path, skills has to exist translated into motion or it will besides exist at once forgotten. happily, IBM has solved that problem for those of us who've restricted practising budgets. there's now a new (and nevertheless free) edition of DB2 10 express C, which will besides exist establish right here: http://www.ibm.com/developerworks/downloads/im/udbexp/index.html. in case you determine upon a virtual appliance as I do, that you may download that here: http://www.ibm.com/developerworks/wikis/screen/im/IBM+digital+appliances#IBMVirtualAppliances-db2Tip #three: down load the Product Documentation
IBM has made it handy to bag the product documentation. that you can download confident pdfs or a zipper file of the gross set at http://www-01.ibm.com/guide/docview.wss?uid=swg27024478.Tip #four: read ‘What’s New for DB2 version 10.1’
when you’ve downloaded the documentation, study the ‘What’s New’ pdf. With every liberate, I study these from cowl-to-cover to find out what i would gain and what i would casual by route of relocating from the existing free up to the newest product degree.
when you are setting up DB2 10 in a pristine environment, this confident document isn't as vital for you. although, if you're pondering of upgrading to DB2 10 from an past DB2 unlock, it is crucial that you pay confident consideration to the chapters that focus on changes as well as reviewing deprecated and discontinued performance. within the latest document, this advice is coated in aspect in fraction 2.Tip #5: accomplish pals with the Infocenter
When it involves DB2, the studying useful resource i exploit most often is the DB2 suggestions core (Infocenter). For DB2 10, the on-line version of the tips headquarters is http://pic.dhe.ibm.com/infocenter/db2luw/v10r1/index.jsp. a remarkable feature of the Infocenter offers the capacity to set up "scopes" to filter the assistance lower back. for instance if i am working on establishing the Workload supervisor, i'll create a scope option to opt for best those topics that relate to my current effort.
Tip #6: commerce Time commute
by using a long way, probably the most unique new features with DB2 10.1 is the possibility of time travel! unfortunately, IBM hasn’t yet solved the time shuttle enmesh 22 situation for individuals, however DB2 10 for LUW introduces endemic aid for temporal facts. One selected challenge I often kisser requires that I design solutions round "useful time". enterprise time, often known as software time or legitimate time, coupled with some new SQL key words offers a simple DB2 10.1 option to pellucid up that problem.
company time tables require three extra columns and an addition to the fundamental key. as an example, if my commerce sold songs and i designed my pricing constitution according to calendar dates with the 30 days after a liberate commanding a higher rate and subsequent intervals offering a successively lessen rate, I could create a commerce time desk dote this:CREATE table "LCKSMITH"."BUSINESS_PERIOD" ( "UNIQUE_ID" BIGINT not NULL , "SONG_ID" BIGINT no longer NULL , "fee" DECIMAL(eight,2) not NULL , "START_DATE" DATE no longer NULL , "END_DATE" DATE no longer NULL , length BUSINESS_TIME ("START_DATE","END_DATE") ) IN "USERSPACE1" ; ALTER table "LCKSMITH"."BUSINESS_PERIOD" ADD primary KEY ("UNIQUE_ID", BUSINESS_TIME without OVERLAPS);
using the BUSINESS_TIME without OVERLAPS syntax disallows overlapping periods and ensures that values for the repose of the keys are wonderful with treasure to any duration of BUSINESS_TIME. This allows me to automatically manage ‘advantageous’ date models of the information. With this table, i can return the rate of a track for a specific advantageous date or a variety of dates.
to near records from this desk, i will exist able to exercise a brand new SQL clause FOR BUSINESS_TIME with alternate options:As of <price> From <value1> to <price 2> Between <value1> and <value2>
The DB2 SQL Reference Volumes 1 and a couple of, which are included in the product sheperd download (see hyperlink in tip #three) fill more counsel about BUSINESS_TIME tables, together with everything the options that can aid tailor an retort to your specific requirement.
note that DB2 10 makes exercise of an inclusive/exclusive method for time durations, which means that the specified close aspect is the first constituent in time when the given tips is no longer valid.Tip #7: gadget Time commute
IBM gave us not only one time trip alternative with DB2 10.1, however two. device time tables are most excellent for protecting historical versions of records and can exist used to reply the age historical question "What changed and when?"
the usage of a system Time desk requires each a basis desk and a background desk. the basis desk will hang the most existing advice and the background table will hang the ‘historic’ rows. DB2 will transparently exercise the historical past desk when vital to answer queries.
each the basis and historic tables ought to fill a starting and ending timestamp and a length special by using the key phrase SYSTEM_TIME. moreover there is a hidden column it's generated through DB2 as a timestamp. the usage of my track store as my example, I may want a desk that could capture historical changes to the royalty expense in order that I could fill an audit path. My basis table could seek dote this:CREATE table "LCKSMITH"."song" ( "id" INTEGER not NULL , "SONG_NAME" VARCHAR(32) , "ROYALTY_PRICE" DECIMAL(10,2) , "SYS_START" TIMESTAMP(12) now not NULL GENERATED always AS ROW start , "SYS_END" TIMESTAMP(12) no longer NULL GENERATED at everything times AS ROW close , "TRANS_ID" TIMESTAMP(12) IMPLICITLY HIDDEN GENERATED everything the time AS TRANSACTION delivery identification , duration SYSTEM_TIME ("SYS_START","SYS_END") ) IN "IBMDB2SAMPLEREL" ; ALTER table "LCKSMITH"."music" ADD fundamental KEY ("id");
To maintain the ancient information i will create a historical past table, which i will exist able to identify MUSIC_HISTORY. On the MUSIC_HISTORY desk, despite the fact, i can't create the simple key considering the fact that there may besides exist assorted models of the historic rows saved there. i will exist able to besides set the historical past table to APPEND ON for more desirable performance and set prevent ON DROP to avoid dropping entry to my historic assistance if the bottom desk is dropped.$> db2 "create table music_history dote track with impede on drop" $> db2 "alter table music_history append on"
i'll additionally alter the bottom desk as follows:$> db2 "alter table tune add versioning exercise tradition desk music_history"
be confident to prefer a seek at the SQL Reference volumes mentioned above for suggestions on the new SQL constructs to aid this functionality. when you are wondering if you can combine both enterprise and materiel time duration advice right into a solitary desk, the reply is "sure". search for the time era bitemporal within the manuals.Tip #8: Row and Column access manage (RCAC)
I struggled to wait this long to talk about security, but it became charge the wait. RCAC is new in DB2 10.1 and provides tremendous energy to your facts coverage arsenal. RCAC makes it possible for the SECADM the skill to subset the facts to implement access through handiest those that necessity to recognize.
RCAC is used to create controlling rule permissions for rows and offers covering alternate options for columns with out the necessity of changing functions to accommodate the improved safety. in contrast to Label based entry Controls, which might exist designed to allow protections in keeping with records hierarchies, RCAC provides a accustomed intention retort and is a remarkable deal more convenient to installation.
To create row permissions, the SECADM first designs after which runs a CREATE leave on a table.
word that the default for the enable/DISABLE option is DISABLE. The influence of that selected clause is based on the current status of activation, so it's captious to examine and exist vigilant the documentation before imposing. After the row leave labor has been completed, the SECADM will then ALTER the desk to prompt the row entry manage.
For column insurance policy, DB2 10.1 offers us COLUMN mask. this is best for columns that maintain particularly dainty information, similar to SSN or account balances. the exercise of a CASE statement, the SECADM can deliver alternatives to mask the facts and monitor it only to applicable users.
Taking a monetary example, the SECADM might are looking to provide column insurance policy in order that best those that fill a company deserve to discern the SSN, reminiscent of personal loan managers, could exist capable of access that statistics. Others who try to discern the SSNs might exist shown a null price. An illustration might possibly be:CREATE mask SSN_MASK ON ACCOUNT_HOLDER FOR COLUMN SSN RETURN CASE WHEN VERIFY_ROLE_FOR_USER(SESSION_USER, 'supervisor') = 1 THEN SSN ELSE NULL end enable;
After the masks is created, the table has to exist altered to accomplish the column mask energetic.ALTER table ACCOUNT_HOLDER activate COLUMN entry control;
One tremendous safety plan here is that even users who hang DATAACCESS authority can exist avoided from accessing dainty information because of RCAC. according to the masks that changed into created for the ACCOUNT_HOLDER desk, right here’s an illustration of a earlier than and after seek at various.
however the information remains there.
observe that I grasp DATAACCESS authority for the database and that after the masks is activated, i'm nevertheless prevented from seeing the SSN values as a result of i'm not a member of the manager function.
this is just a petite sample of the vigor of RCAC. there's a significant quantity of more information involving RCAC within the product manuals and advice middle to aid you bag everything started.Tip #9: HADR Enhancements
HADR users can exist satisfied to grasp that now, in addition to the major HADR standby, that you can besides fill two auxiliary standbys. DB2 10 additionally added a new option of delayed replay for sever standby servers. i can discern this functionality being very helpful in instances the situation anything unexpected has happened that brought about facts corruption on the fundamental server. as an instance, if crucial data changed into overwritten on the fundamental, with the log replay delayed, the ‘first rate’ statistics would nevertheless exist on the lagging standby allowing a simple records healing choice. That functionality on my own would accomplish me respect an auxiliary standby. If that wasn’t sufficient, HADR log spooling is one other new DB2 10 feature that may back prevent performance considerations on the primary due to spikes in logging pastime on the standby.
There are some issues concerning auxiliary standbys. as an instance, there is not any automated takeover assist for the auxiliary standbys as there's for the main standby. although, both position swap (graceful) and Failover (when the basic has failed) sheperd takeover are supported and any of the standby databases can prefer over as basic.
As which you could mediate about, there are some additional setup steps and configuration changes which are integral in the event you add auxiliary HADR standby servers. in line with what I learned at IDUG, whereas the configuration steps appear to exist simple ample, it's essential to accomplish confident they're appropriately completed to avoid "orphans".
in case you want to exist trained more about maximizing your exercise of standby databases, this DB2 9.7 article may additionally present some counsel: https://www.ibm.com/developerworks/facts/library/techarticle/dm-1205hadrstandby/index.htmlTip #10: Multi-Temperature information Storage
All statistics warehouse statistics is not equal. quite a few classes of statistics will fill diverse SLAs and therefore, sever storage necessities. whereas the time era multi-temperature storage has been in exercise for a long time, prior to DB2 10, comfortably managing storage for multi-temperature warehouse environments required titanic planning and coordination.
a significant design and storage challenge is that facts warehouse information adjustments ‘temperature’ as it a while. currently loaded facts can exist heavily accessed (sizzling) for reporting, however as it a while, its historical significance, whereas soundless useful from the commerce perspective, might besides no longer exist as useful for reporting and it cools to warm or cold. Add this dynamic to the undeniable fact that the fastest storage is the most expensive and it is convenient to seek that as records ages, it has to exist moved to much less expensive instruments.
To tackle this subject, DB2 10 provides new DDL alternate options that are used for creating, altering and losing storage corporations. These storage organizations may besides exist described to allow storage of records in accordance with its preferred facts access. quicker media may besides exist defined to grasp ‘scorching’ or frequently accessed statistics, whereas slower media may besides exist assigned to storage corporations that grasp much less commonly accessed facts.
table spaces that exercise automated storage will exist linked to a storage neighborhood when created and/or altered and will instantly inherit the media attributes of the storage neighborhood. table spaces can then exist moved on-line from one storage neighborhood to yet another because the facts temperature alterations.
if you are looking to learn specifics about Multi-Temperature storage, there is an excellent white paper on the subject. which you could down load it from http://public.dhe.ibm.com/utility/dw/records/dm-1205multitemp/DB2V10_Multi-Temperature_0412.pdfA bonus Tip:
there is a gross lot greater to the DB2 LUW 10.1 release than is lined right here and, obviously, my researching priorities may besides or may additionally no longer exist comparable to yours. I motivate you to invoke your personal synergistic approach to discovering about everything the first-rate features of DB2 10.1 and the charge they can present your business.
See everything articles with the aid of Rebecca Bond
one of the most things i dote about Steve Will, the new chief IBM i architect, is that he likes statistics as an terrible lot as the repose of us do. When he offers a presentation concerning the IBM i platform and the vigor techniques servers that it runs upon, he isn’t afraid to give you arts and charts and exact counsel to accomplish some extent. And so it's in a concomitant sequence of presentations with a view to has been giving to the AS/four hundred steadfast related to IBM i roadmaps and different things.
We’ve long past in the course of the roadmaps and the new system for updating the operating device with new facets that IBM has instituted to carry some regularity to the process as well as consistency with the manner AIX is up-to-date. nowadays, i wanted to participate some suggestions with a view to is sharing about DB2 for i, the integrated relation database management device at the heart of the IBM i platform.
As you everything exist vigilant of, IBM has three diverse DB2 database management programs: DB2 for the materiel z mainframe running z/OS, DB2 for i for the vigour systems server working IBM i, and DB2 for Linux, Unix, and home windows (shortened to DB2 LUW) for techniques the usage of X64, energy, Sparc, and Itanium processors. it's a extremely extensive basis of servers providing relational database functionality, but the code bases for these three DB2s are very different. but over time, the Rochester Lab the situation the AS/four hundred changed into created and the Toronto Lab the situation the mainframe and LUW DB2s eventually establish a house, fill collaborated and shared technologies–a gross lot as IBM’s hardware divisions fill done–without dropping what makes them entertaining.
The enjoyable constituent that you simply may not exist vigilant about is that DB2 LUW does not everything the time bag the first rate aspects first. in fact, every now and then it receives them third. check out this pretty cramped chart Wills created:
Will says that the three DB2s bag new features as purchasers require them, no longer in keeping with any option for one operating device over a different. IBM’s DB2 construction has transformations over the brief time era in keeping with the sever unlock dates for the DB2 types and releases and long race changes in line with the capabilities of the underlying working techniques that these DB2s race upon; this contains database configuration, administration, and related database utilities that are available for these operating programs. definitely, IBM controls z/OS and IBM i, so this job is a cramped bit more convenient, and it additionally controls AIX, but windows, Linux, Solaris, and HP-UX are absolutely past IBM’s handle, and greater importantly with respect to home windows and Solaris, these are two operating where their providers, Microsoft and Oracle, are basically hostile to massive Blue’s system company.
The vital factor is that DB2 for i 7.1 is retaining its own in terms of function enhancements in opposition t DB2 for z/OS 10.1 and DB2 LUW 9.7. I in my persuasion wish that IBM would update DB2 Multisystem to exist a PureScale cluster environment because it introduced in September 2009 for AIX and began providing ultimate 12 months. This clustering is equivalent to Parallel Sysplex clustering on system z mainframes.
also on my wish listing is a return to the previous, of sorts. returned when the AS/four hundred was launched, the database turned into the file materiel and everything, and that i hint every thing, went into it and became therefore indexable and usable via applications. The AS/four hundred didn’t fill ample oomph to accomplish this purposeful for huge media data, however with the oomph of Power7 machines, IBM could bag a upright side through returning to these roots and creating a actual expostulate store everything kinds of information. IBM had the commandeer thought, it turned into well-nigh 20 years ahead of its time.
As Will features out, when you bag an IBM i machine, you don’t fill to set up a database–it’s already there, able for you to pour counsel into and smack it round the usage of functions. lots of the initiatives that require database administrators are instantly carried out by route of the working device and the DB2 for i database working in live performance, under the covers. This contains:
the entire DB2s assist a lot of interoperability features for sharing assistance across their a number of server structures. everything DB2s working on Linux, Unix, home windows, and IBM i sheperd IBM’s own DRDA protocol as smartly because the Java JDBC protocol. The DB2 for i database supports its endemic DDM and CLI protocols, which aren't supported on DB2 LUW. The Linux and home windows variations of DB2 aid Microsoft’s ODBC protocol, and the home windows edition helps .web and OLE DB protocols. DB2 for i has direct interfaces for RPG, COBOL, C, and C++ as smartly.
most likely most indicative of how critically IBM takes DB2 for i, of the ninety three elements required for conformance to the core SQL commonplace administered by means of ISO/ANSI, everything of these points–100 percent–are applied in the database at the heart of IBM i 7.1. DB2 for LUW 9.7 supports only seventy five of these core SQL elements, and Oracle 11g, Microsoft SQL Server 2008, and DB2 for z/OS 10.1 sheperd even fewer facets.
DB2 for i is a true, serious, and advantageous database administration gadget. It’s a compassion IBM received’t accomplish it compete on rate, too, at the low conclusion and midrange fraction of the road.
The power systems-IBM i street ahead
IBM i Chief Architect Tells Us where We’re At
mp;A With vigour techniques proper Brass, fraction Two
mp;A With vigour methods suitable Brass, half One
IBM Is Prepping Power7+ and puzzling over Power8
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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 fraction of a DB2 client are packaged on their own, outside of a client installation. DB2 drivers tender a more lightweight deployment option for specific API connectivity.
DB2 Connect™ — This add-on product provides back 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 everything of the DB2 mainstream editions that race 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 exist 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 aid you publish, place, cleanse, transform, enrich, and access data across heterogeneous data sources.
WebSphere Application Server — A fraction of this application server is shipped with DB2. It allows developers to exercise Java as a platform in a transaction processing environment.
Once a DB2 application has been developed, you necessity 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 necessity 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 back connectivity to DB2 9 data servers (the exception to this is if you elect to back communication via specific API drivers, covered later in this section). When you install a DB2 Runtime Client, you install a driver to back everything the common programming methodologies, including ADO.NET, ADO, OLE DB, ODBC, JDBC, SQLJ, static SQL, and more.
Note - In this chapter, the exercise 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 effect 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 involve tooling, documentation, and so on. The DB2 9 Runtime Client is analogous to the DB2 8 Runtime Client Lite, only is now available on everything 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 everything the functions establish 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 helper 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 establish in both the DB2 8 Application progress and DB2 8 Administration clients.
A DB2 Client's footprint is directly correlated to the components you select to install and can prefer 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 option of which DB2 client to install should exist based on the requirements of the application on the client machine. For example, if you fill a database application developed for Linux, UNIX, or Windows and you achieve not require the DB2 administration or application progress tools from a Windows workstation, yet want to back applications written in multiple programming languages dote .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 necessity to access the DB2 Runtime Client code remotely from a code server before accessing to DB2. This ilk of configuration is known as a thin client. A thin-client configuration can provide many benefits, such as a central catalog directory of everything database connections and a solitary 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 exist illustrious 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 necessity to ensure that a DB2 Runtime Client is installed on each workstation executing the application. motif 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 very server, connectivity is considered to near from a local client. If the application is installed on a system other than the DB2 data server, its connectivity is considered to near from a remote client.
Figure 1–10Accessing a DB2 data server using the DB2 Runtime Client
DB2 client connectivity can exist 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 solitary 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 exist deployed for connectivity on their own, outside of a DB2 Runtime Client or DB2 Client installation.
The IBM Driver for JDBC and SQLJ can exist deployed to back Java-based connectivity to a DB2 data server. This driver is about 2 MB in size and can easily exist 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 necessity to additionally license this connectivity with DB2 Connect (covered in the next section) to ensure you are compliant with respect to licensing.
It's necessary 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 back data server connectivity using other APIs. For example, you can't back 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 very 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 necessity to fill 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 sever 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 exercise the Distributed Relational Database Architecture (DRDA), you fill 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 necessity 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 achieve 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 progress environments for mainframe data access. For example, DB2 Connect makes data artifacts on the mainframe (including nonrelational-related services dote CICS and VSAM) transparent to the world's most celebrated IDEs; for example, a .NET developer can exercise 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 tradition systems with new deployments on distributed platforms, modernize the application progress sustain for mainframe progress (for example, affecting from COBOL to Java), and off-loading progress 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 discern in motif 1–11 that there are many ways to implement a DB2 Connect product. In a multi-tier environment, you exercise 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 fill DB2 Connect on its own or collocated with the application server. Depending on your configuration, you may or may not necessity to install a DB2 client.
DB2 Connect products can exist 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 accomplish the connection to a mainframe DB2 resource, but you soundless necessity to purchase a sound 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, everything of the DB2 Connect editions tender the very function and features; they are merely differentiated by capability. everything 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 exercise a DB2 client.
DB2 Connect Personal Edition (DB2 Connect PE) is similar to DB2 Personal Edition in that it is used for solitary workstations and doesn't provide its users with any server capabilities. Using DB2 Connect PE, you can accomplish direct connections to DB2 running on the mainframe. In motif 1–11, the desktop users likely fill DB2 Connect PE installed in their workstations. DB2 Connect PE can besides 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 accomplish direct connections using the DB2 Connect PE software for confident stages of the progress cycle. But once the application is in production, they may exercise the DB2 Connect PE software to connect to a DB2 Connect gateway to prefer handicap 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 exist licensed using two different user-based options: the number of Authorized Users or the number of Concurrent Users. DB2 Connect EE provides the talent to implement a three-tier connectivity architecture that allows you to segregate 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 everything the applications servers that connect to the mainframe. The VUs that you purchase fill nothing to achieve 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 fill to buy 1,000 VUs of DB2 Connect ASE. DB2 Connect ASE is well suited for environments where you anticipate to discern 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 basis server license plus a per-unit freight for the MSU rating of the System z server you are connecting to. DB2 Connect UE is well suited for environments that fill flat mainframe cycle growth and massive 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 scuttle mainframe data to occasionally connected devices, as well as DB2 Connect PE. Essentially, this edition of DB2 Connect, as its denomination would imply, allows for unlimited deployments.
There's so much more to the DB2 Connect product than what's circumstantial in this section. In fact, the denomination DB2 Connect is misleading because connectivity is just a petite fraction of what this product can do; however, these details are outside the scope of this book.
IBM this month announced a new release of DB2 Connect, a piece of middleware used to connect client applications running on Linux, Unix, or Windows platforms to DB2 database servers running on IBM i and z/OS. With DB2 Connect version 10.1, IBM added back for DB2 for i version 7.1. It besides added a number of features for taking advantages of the latest enhancements to DB2 for z/OS.
DB2 Connect enables client applications to create, access, update, control, and manage DB2 databases on host systems using a variety of languages, including SQL, ODBC, JDBC, DB2 APIs, SQLJ DB2 convene flat Interface (CLI), .NET, PHP, Ruby, Python, Perl, and pureQuery. The most common exercise of the software is serving SQL statements to DB2 on IBM i and z/OS systems, but it can besides exist used to connect tables from multiple DB2/400 databases, including other DB2 versions and Informix, and even Oracle, SQL Server, and Sybase when coupled with that ultimate gigantic Blue data broker, WebSphere Information Integrator.
The lone IBM i-related enhancement in DB2 Connect 10.1 is a biggie: back for DB2 for i running on the latest IBM i version 7.1 operating system, which shipped two years ago this month. Late back is better than no support.
The bulk of the enhancements in DB2 Connect 10.1 focus on the various drivers to back the latest capabilities in DB2 10 for z/OS platform, which IBM shipped in October 2010. This includes: binary XML back in Java drivers; XML-related performance boosts; back for extended vector variables; temporal table support; enhanced timestamp precision; and other performance and towering availability enhancements.
This release besides delivers better back for IBM tools, including WebSphere Application Server, Optim Configuration Manager, and Data Studio. Programmers will exist ecstatic to hear DB2 Connect 10.1 brings: new JDBC 4.1 capabilities for Java 7; back for the .NET 4.0 framework with Entity Framework; complete integration with Visual Studio 2010; and back for migrating applications from other database vendors to DB2 for z/OS.
IBM has besides reworked its various DB2 Connect bundles, including shrinking the footprint of its Data Server (DS) Driver bundle; streamlined activation of DB2 Connect Unlimited Edition for System z; and new gateway options.
Companies running the advanced IBM pureQuery Runtime for Linux, Unix, and Windows will discern new security features, including the capability to prevent SQL injection by restricting the SQL executed by a specific application to specific SQL statements. This release besides gives users the capability to transfigure dynamic SQL to static SQL, which improves performance and security.
DB2 Connect 10.1 editions become available June 11. For more information on DB2 Connect 10.1, discern IBM United States Software Announcement 212-076.
Raz-Lee Claims IBM i Data-Access Breakthrough with DB-Gate
DB2 Connect Gets Better back for Stored Procedures and Triggers
IBM Officially Announces i/OS 7.1
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In this chapter you will exist introduced to the DB2 family of products that race on the Linux, UNIX, and Windows operating systems.This chapter is from the book
In this chapter you will exist introduced to the DB2 family of products that race 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 talent to store everything 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 dote engineering drawings, maps, insurance claims forms, numerical control streams, or any ilk 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 necessary fraction of IBM's Information as a Service software portfolio that serves as the atomic flat for the broader IBM On demand architecture.
In motif 1-1 you can discern that the IBM software portfolio has really evolved into a collection of towering 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 exist used to collectively manage your entire IT framework. For example, Tivoli Storage Resource Manager services can exist used enterprise-wide to monitor and report on heterogeneous storage resources to extend 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 progress empowers application developers with a rich set of services that can exist 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 fraction of the Lotus® suite of products that enhance collaboration and plan sharing across the enterprise and beyond. Products dote Lotus Sametime® Connect can exist used for messaging and more.
A number of services in the framework illustrated in motif 1-1 are provided by the WebSphere® portfolio. For example, a product dote WebSphere Integration Developer helps you define commerce process flows in the touchstone commerce Process Execution Language (BPEL), which are used to implement process services that in spin aid you define, orchestrate, and automate commerce 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 illustrious product of the WebSphere brand is the WebSphere Application Server that provides a runtime framework for J2EE®-based operations that are fraction of the Infrastructure Services component.
Finally there's the Information Services which limn the superset of the capabilities you'll learn about in this book. The specific set of services that are typically establish in this fraction of the IBM reference architecture are shown in motif 1-2.
The services shown to the right in motif 1-2 are hierarchical in nature. In other words, as you labor from bottom to top, the services provided become richer and more commerce oriented.
For example, Master Data Management services are provided by the WebSphere Product headquarters and WebSphere Customer headquarters products. Master data are facts that limn your core commerce 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 close result is a simplification of ongoing integration tasks and new application development. This discipline addresses key issues such as data trait and consistency proactively rather than "after the fact"; for example, in a data warehouse (a lower service in this taxonomy). There is besides a set of entity resolution services that suitable 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 exist searched and folded into the information asset.
Information Integration services seek to provide enterprises with ways to share, place, publish, cleanse, and enrich data establish in the lower-level data management services. WebSphere Federation Server and its parent WebSphere Information Server are two such products that aid 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 suitable 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 motif 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 exist race 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 dote the RIM® Blackberry®, and more).
The DB2 code basis is optimized for each platform to ensure maximum performance and integration. DB2 for Linux, UNIX, and Windows shares about a 98 percent common code basis with platform-specific optimizations at the operating system interface (OSI) flat (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 fraction you'll know how to manage DB2 for Linux or DB2 for Windows; this is the judgement why there is a solitary DB2 certification for everything 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 everything the platforms where DB2 runs, allowing applications written on one platform to exist 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 progress handbook, your application will exist 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 very code as is used for DB2 for Linux, UNIX, and Windows. So while there may exist variations in specific data definition language (DDL)-based tasks, the data manipulation language (DML) and client APIs are similar.
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ACT [1 Certification Exam(s) ]
Admission-Tests [13 Certification Exam(s) ]
ADOBE [93 Certification Exam(s) ]
AFP [1 Certification Exam(s) ]
AICPA [2 Certification Exam(s) ]
AIIM [1 Certification Exam(s) ]
Alcatel-Lucent [13 Certification Exam(s) ]
Alfresco [1 Certification Exam(s) ]
Altiris [3 Certification Exam(s) ]
Amazon [2 Certification Exam(s) ]
American-College [2 Certification Exam(s) ]
Android [4 Certification Exam(s) ]
APA [1 Certification Exam(s) ]
APC [2 Certification Exam(s) ]
APICS [2 Certification Exam(s) ]
Apple [69 Certification Exam(s) ]
AppSense [1 Certification Exam(s) ]
APTUSC [1 Certification Exam(s) ]
Arizona-Education [1 Certification Exam(s) ]
ARM [1 Certification Exam(s) ]
Aruba [8 Certification Exam(s) ]
ASIS [2 Certification Exam(s) ]
ASQ [3 Certification Exam(s) ]
ASTQB [8 Certification Exam(s) ]
Autodesk [2 Certification Exam(s) ]
Avaya [101 Certification Exam(s) ]
AXELOS [1 Certification Exam(s) ]
Axis [1 Certification Exam(s) ]
Banking [1 Certification Exam(s) ]
BEA [5 Certification Exam(s) ]
BICSI [2 Certification Exam(s) ]
BlackBerry [17 Certification Exam(s) ]
BlueCoat [2 Certification Exam(s) ]
Brocade [4 Certification Exam(s) ]
Business-Objects [11 Certification Exam(s) ]
Business-Tests [4 Certification Exam(s) ]
CA-Technologies [20 Certification Exam(s) ]
Certification-Board [10 Certification Exam(s) ]
Certiport [3 Certification Exam(s) ]
CheckPoint [43 Certification Exam(s) ]
CIDQ [1 Certification Exam(s) ]
CIPS [4 Certification Exam(s) ]
Cisco [318 Certification Exam(s) ]
Citrix [48 Certification Exam(s) ]
CIW [18 Certification Exam(s) ]
Cloudera [10 Certification Exam(s) ]
Cognos [19 Certification Exam(s) ]
College-Board [2 Certification Exam(s) ]
CompTIA [76 Certification Exam(s) ]
ComputerAssociates [6 Certification Exam(s) ]
Consultant [2 Certification Exam(s) ]
Counselor [4 Certification Exam(s) ]
CPP-Institute [4 Certification Exam(s) ]
CSP [1 Certification Exam(s) ]
CWNA [1 Certification Exam(s) ]
CWNP [13 Certification Exam(s) ]
CyberArk [1 Certification Exam(s) ]
Dassault [2 Certification Exam(s) ]
DELL [11 Certification Exam(s) ]
DMI [1 Certification Exam(s) ]
DRI [1 Certification Exam(s) ]
ECCouncil [22 Certification Exam(s) ]
ECDL [1 Certification Exam(s) ]
EMC [128 Certification Exam(s) ]
Enterasys [13 Certification Exam(s) ]
Ericsson [5 Certification Exam(s) ]
ESPA [1 Certification Exam(s) ]
Esri [2 Certification Exam(s) ]
ExamExpress [15 Certification Exam(s) ]
Exin [40 Certification Exam(s) ]
ExtremeNetworks [3 Certification Exam(s) ]
F5-Networks [20 Certification Exam(s) ]
FCTC [2 Certification Exam(s) ]
Filemaker [9 Certification Exam(s) ]
Financial [36 Certification Exam(s) ]
Food [4 Certification Exam(s) ]
Fortinet [14 Certification Exam(s) ]
Foundry [6 Certification Exam(s) ]
FSMTB [1 Certification Exam(s) ]
Fujitsu [2 Certification Exam(s) ]
GAQM [9 Certification Exam(s) ]
Genesys [4 Certification Exam(s) ]
GIAC [15 Certification Exam(s) ]
Google [4 Certification Exam(s) ]
GuidanceSoftware [2 Certification Exam(s) ]
H3C [1 Certification Exam(s) ]
HDI [9 Certification Exam(s) ]
Healthcare [3 Certification Exam(s) ]
HIPAA [2 Certification Exam(s) ]
Hitachi [30 Certification Exam(s) ]
Hortonworks [4 Certification Exam(s) ]
Hospitality [2 Certification Exam(s) ]
HP [752 Certification Exam(s) ]
HR [4 Certification Exam(s) ]
HRCI [1 Certification Exam(s) ]
Huawei [21 Certification Exam(s) ]
Hyperion [10 Certification Exam(s) ]
IAAP [1 Certification Exam(s) ]
IAHCSMM [1 Certification Exam(s) ]
IBM [1533 Certification Exam(s) ]
IBQH [1 Certification Exam(s) ]
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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