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With the launch of DB2 10.1, big Blue is adding a slew of recent points that make DB2 greater constructive for modern, big-records workloads.
reckoning on how you are looking to count 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 business which are pushed off its DB2 databases.
be aware that we spoke of DB2 databases. IBM has three diverse DB2s, now not only 1. there may be 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 level 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 excessive 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 big 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 development 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 make 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 work on the a part 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 do 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 do in a relational database or a Hadoop cluster, graph analytics walks you through the entire viable combos of records to see 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 also you query a knowledge shop with this records using a question language referred to as SPARQL.
The Apache Jena task 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 also be 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 be indexed and processed natively, IBM is now bringing in the RDF format so that graph triples can also be 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 all 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 also contains temporal logic and analysis functions that enable it to do "time trip queries" – features that IBM brought to the mainframe variant of DB2 final yr. by using now supporting native temporal records codecs internal the database, that you would be able to do 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 do bi-temporal queries," says Spang, and you can do it with SQL syntax, too. that you would be able to turn time commute query on or off for any desk inner the DB2 database to do historic or predictive evaluation throughout the data units. RDF file layout and SPARQL querying can be found across all versions of DB2 10.1.
Like other database makers, IBM is fixated on facts compression options now not only to cut back the quantity of physical storage valued clientele deserve to put under their databases, however also to pace up performance. With DB2 9.1, IBM added table compression, and with the greater contemporary 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 charge for enterprise Server edition.performance boosts, administration automation
On the performance entrance, IBM's database hackers have tweaked the kernel of the database to make more suitable use of the parallelism in the multicore, multithreaded processors which are normal 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 run 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 be able to get greater efficiency with no need 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 be able to additionally prioritize essential DB2 workloads with different classes of carrier degree agreements.
Database indexes now have 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 do for their processors.
DB2 now also has a multi-temperature facts management feature that knows the difference between flash-primarily based SSDs, SAS RAID, SATA RAID, and tape or disk archive, and may automagically move database tables that are hot, warm, cold, and downright icy to the appropriate equipment.
access handle is a big 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 also be locked out of any row or column of records. Now, personnel handiest see the statistics they deserve to know, and you shouldn't have to partition an utility into distinct classes of clients. You simply do 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 all 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 clear to El Reg as we go to press. It seems a bit like 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) high availability clustering elements (new with this release), and has a memory cap of 8GB and can run 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 have 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 all of the bells and whistles, together with optimizations and equipment to make DB2 play better in a knowledge warehouse. Pricing for the Workgroup Server and advanced business Server had been not purchasable at press time. ®
backed: fitting a realistic safety chief
Synergy is vital to a DBA. all through our day, we work 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 strong guidance in regards to the newest points of DB2, so I registered and decided to check my synergistic plan to maximise getting to know, bounce birth my direction to attaining DB2 10 certification and confirm that my skillset was mighty enough to help my customer’s future needs.
all through the convention, i admire to spend my time paying attention to the presenters and don’t want to be distracted by taking notes. lamentably, there are such a lot of sessions that it becomes a challenge to preserve all that suggestions. So, this yr, I determined to maximize my time through jotting down brief suggestions and keyword phrases all the way through each and every session that could assist me bear in mind specific areas that i wished to evaluate after the conference. Now that I’ve had a while to consolidate these quick notes, I’ve get 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 be at the desirable of the gaining knowledge 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 be an ideal resource for my objectives. The periods supplied brief information that facilitated useful studying short cuts and allowed me to benefit a basis of knowledge with minimal own effort. Attending these classes made it appear that i was studying with the smartest youngster within the school moreover, I have the email address for that smart child now in case I have questions after the conference.Tip #2: set up the Product
Of path, skills has to be translated into motion or it will also be 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 also be found right here: http://www.ibm.com/developerworks/downloads/im/udbexp/index.html. in case you decide 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 get the product documentation. that you can download certain pdfs or a zipper file of the whole 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 chance by way of relocating from the existing free up to the newest product degree.
when you are setting up DB2 10 in a pristine environment, this certain 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 certain 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 part 2.Tip #5: Make 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 center is http://pic.dhe.ibm.com/infocenter/db2luw/v10r1/index.jsp. a great 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: business 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 catch 22 situation for individuals, however DB2 10 for LUW introduces native help for temporal facts. One selected challenge I often face 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 choice to clear up that problem.
company time tables require three extra columns and an addition to the fundamental key. as an example, if my business 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 decrease rate, I could create a business time desk like 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 rest of the keys are wonderful with appreciate 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 come records from this desk, i will be able to use 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 guide download (see hyperlink in tip #three) have more counsel about BUSINESS_TIME tables, together with all the options that can aid tailor an answer to your specific requirement.
note that DB2 10 makes use of an inclusive/exclusive method for time durations, which means that the specified end aspect is the first element 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 be used to reply the age historical question "What changed and when?"
the usage of a system Time desk requires each a base desk and a background desk. the base desk will hang the most existing advice and the background table will hang the ‘historic’ rows. DB2 will transparently use the historical past desk when vital to satisfy queries.
each the base and historic tables ought to have 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 have an audit path. My base table could look like 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 begin , "SYS_END" TIMESTAMP(12) no longer NULL GENERATED at all times AS ROW end , "TRANS_ID" TIMESTAMP(12) IMPLICITLY HIDDEN GENERATED all the time AS TRANSACTION delivery identification , duration SYSTEM_TIME ("SYS_START","SYS_END") ) IN "IBMDB2SAMPLEREL" ; ALTER table "LCKSMITH"."music" ADD fundamental KEY ("id");
To keep the ancient information i will create a historical past table, which i will be 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 also be assorted models of the historic rows saved there. i will be able to also 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 like track with hinder on drop" $> db2 "alter table music_history append on"
i'll additionally alter the bottom desk as follows:$> db2 "alter table tune add versioning use heritage desk music_history"
be certain to take a look at the SQL Reference volumes mentioned above for suggestions on the new SQL constructs to help this functionality. when you are wondering if you can combine both enterprise and equipment time duration advice right into a single desk, the reply is "sure". search for the time period 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 price the wait. RCAC is new in DB2 10.1 and provides tremendous strength 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 need to recognize.
RCAC is used to create controlling rule permissions for rows and offers covering alternate options for columns with out the need of changing functions to accommodate the improved safety. in contrast to Label based entry Controls, which might be designed to allow protections in keeping with records hierarchies, RCAC provides a usual intention answer and is a good deal more convenient to installation.
To create row permissions, the SECADM first designs after which runs a CREATE PERMISSION 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 state of activation, so it's critical to examine and be aware the documentation before imposing. After the row permission work 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 keep particularly delicate information, similar to SSN or account balances. the use 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 have a company deserve to see the SSN, reminiscent of personal loan managers, could be capable of access that statistics. Others who try to see the SSNs might be 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 be altered to make the column mask energetic.ALTER table ACCOUNT_HOLDER activate COLUMN entry control;
One tremendous safety idea here is that even users who hang DATAACCESS authority can be avoided from accessing delicate 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 look 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 small 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 get all started.Tip #9: HADR Enhancements
HADR users can be satisfied to grasp that now, in addition to the major HADR standby, that you can also have two auxiliary standbys. DB2 10 additionally added a new choice of delayed replay for distinct standby servers. i can see this functionality being very helpful in instances the place 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 make me consider an auxiliary standby. If that wasn’t sufficient, HADR log spooling is one other new DB2 10 feature that may support 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) guide takeover are supported and any of the standby databases can take over as basic.
As which you could think 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 seem to be simple ample, it's essential to make sure they're appropriately completed to avoid "orphans".
in case you want to be trained more about maximizing your use 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 have diverse SLAs and therefore, distinct storage necessities. whereas the time period multi-temperature storage has been in use 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 be heavily accessed (sizzling) for reporting, however as it a while, its historical significance, whereas still useful from the business perspective, might also no longer be 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 look that as records ages, it has to be 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 also be described to allow storage of records in accordance with its preferred facts access. quicker media may also be defined to grasp ‘scorching’ or frequently accessed statistics, whereas slower media may also be assigned to storage corporations that grasp much less commonly accessed facts.
table spaces that use automated storage will be 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 be 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 whole lot greater to the DB2 LUW 10.1 release than is lined right here and, obviously, my researching priorities may also or may additionally no longer be comparable to yours. I motivate you to enforce your personal synergistic approach to discovering about all the first-rate features of DB2 10.1 and the price they can present your business.
See all articles with the aid of Rebecca Bond
one of the most things i like about Steve Will, the new chief IBM i architect, is that he likes statistics as an awful lot as the rest 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 make some extent. And so it's in a contemporary series of presentations with a view to has been giving to the AS/four hundred faithful 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 share 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 all be aware of, IBM has three diverse DB2 database management programs: DB2 for the equipment 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 base of servers providing relational database functionality, but the code bases for these three DB2s are very different. but over time, the Rochester Lab the place the AS/four hundred changed into created and the Toronto Lab the place the mainframe and LUW DB2s eventually found a house, have collaborated and shared technologies–a whole lot as IBM’s hardware divisions have done–without dropping what makes them entertaining.
The enjoyable element that you simply may not be aware about is that DB2 LUW does not all the time get the first rate aspects first. in fact, every now and then it receives them third. check out this pretty little chart Wills created:
Will says that the three DB2s get new features as purchasers require them, no longer in keeping with any choice for one operating device over a different. IBM’s DB2 construction has transformations over the brief time period in keeping with the distinct unlock dates for the DB2 types and releases and long run changes in line with the capabilities of the underlying working techniques that these DB2s run 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 little 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 regard 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 opinion wish that IBM would update DB2 Multisystem to be 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 equipment and everything, and that i suggest every thing, went into it and became therefore indexable and usable via applications. The AS/four hundred didn’t have ample oomph to make this purposeful for huge media data, however with the oomph of Power7 machines, IBM could get a true side through returning to these roots and creating a real object store all kinds of information. IBM had the appropriate thought, it turned into well-nigh 20 years ahead of its time.
As Will features out, when you get an IBM i machine, you don’t have 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 way 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. All DB2s working on Linux, Unix, home windows, and IBM i guide IBM’s own DRDA protocol as smartly because the Java JDBC protocol. The DB2 for i database supports its native 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, all 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 guide even fewer facets.
DB2 for i is a true, serious, and advantageous database administration gadget. It’s a pity IBM received’t make it compete on rate, too, at the low conclusion and midrange part of the road.
The power systems-IBM i street ahead
IBM i Chief Architect Tells Us where We’re At
Q&A With vigour techniques proper Brass, part Two
Q&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 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.
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 support for DB2 for i version 7.1. It also 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 Call Level Interface (CLI), .NET, PHP, Ruby, Python, Perl, and pureQuery. The most common use of the software is serving SQL statements to DB2 on IBM i and z/OS systems, but it can also be used to join tables from multiple DB2/400 databases, including other DB2 versions and Informix, and even Oracle, SQL Server, and Sybase when coupled with that ultimate Big Blue data broker, WebSphere Information Integrator.
The lone IBM i-related enhancement in DB2 Connect 10.1 is a biggie: support for DB2 for i running on the latest IBM i version 7.1 operating system, which shipped two years ago this month. Late support is better than no support.
The bulk of the enhancements in DB2 Connect 10.1 focus on the various drivers to support the latest capabilities in DB2 10 for z/OS platform, which IBM shipped in October 2010. This includes: binary XML support in Java drivers; XML-related performance boosts; support for extended vector variables; temporal table support; enhanced timestamp precision; and other performance and high availability enhancements.
This release also delivers better support for IBM tools, including WebSphere Application Server, Optim Configuration Manager, and Data Studio. Programmers will be happy to hear DB2 Connect 10.1 brings: new JDBC 4.1 capabilities for Java 7; support for the .NET 4.0 framework with Entity Framework; full integration with Visual Studio 2010; and support for migrating applications from other database vendors to DB2 for z/OS.
IBM has also 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 see 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 also gives users the capability to convert 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, see IBM United States Software Announcement 212-076.
Raz-Lee Claims IBM i Data-Access Breakthrough with DB-Gate
DB2 Connect Gets Better Support for Stored Procedures and Triggers
IBM Officially Announces i/OS 7.1
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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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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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