As a DB2 professional, it is necessary to obtain IBM DB2 certification. So, what is IBM DB2 certification? I have compiled some information about IBM DB2 certification for you, hoping it will be helpful to you.
What is DB2?
DB2 has a long history and is considered by many as the first database product using SQL (also developed by IBM). The name DB2 was first used in database management system (DBMS) in 1983, when IBM released DB2 products based on MVS mainframe platform. Previously, a similar product named SQL/DS was applied to the VM host. The early 38 system platform also included a relational database management system. Relational system, or we call it System R, is a retrieval prototype developed in 1970s. DB2 can be traced back to Edgar who worked at IBM in the early 1970s. Dr. E.F.Codd described the theory of relational database and published the data processing model in June 1970. In order to apply this model, Codd needs a relational database language, which he calls Alpha. At that time, IBM didn't believe in the potential of Codd idea, but only handed over the implementation of this project to a program team that was not under the supervision of Codd, and this team violated some basic theories in Codd's relational model. The result of this project is the Structured English Query Language (SEQUEL). When IBM announced its first relational database product, they hoped that a sub-language could also be used for commercial purposes, so IBM redeveloped SEQUEL and named it SQL to distinguish it from SEQUEL. Contrary to popular belief, SQL is not. By allowing deep branching, it breaks the basic rules of structure-oriented languages? Alan taylor, 2004. This can guide readers to think about the true meaning of SQL. Interestingly, when Informix acquired IIustra and made its database engine an object -SQL database management system by introducing its universal server, Oracle and IBM subsequently expanded their database engine capabilities to handle relational objects. In addition, in 200 1 year, IBM purchased Informix and integrated Informix technology into DB2 product group the following year. Today, DB2 can be technically regarded as an object SQL database management system. For many years, DB2, as a full-featured database management system, was dedicated to IBM mainframes. Since then, IBM has brought DB2 to other platforms, including OS/2, UNIX and Windows servers, followed by Linux (including Linux on zSeries) and PDA. This change mainly occurred in the 1990s. The mainframe version of DB2 was inspired by IBM DL/ 1 and IBM IMS to some extent. Both versions were originally hierarchical databases, and later they were converted into CODASYL databases. DB2 is also embedded in the i5/OS operating system of IBM System i(i series, formerly AS/400), and there are z/VSE and z/VM versions. The early code version of DB2 LUW(Linux, Unix, Windows) is a part of the extended version component Database Manager of OS/2. IBM has expanded the functions of the database manager many times, including the distributed database function that allows remote access within the local area network. Finally, IBM announced the insurmountable complexity of the database manager code and made a difficult decision to completely rewrite the software in its Toronto laboratory. The new version of Database Manager is called DB2. Like its predecessor on mainframe, it also runs on OS/2 and RS/6000 platforms, which are called DB2/2 and DB2/6000 respectively.
What is IBM DB2 certification?
DB2 certification is one of the main certification courses in the cooperation project between IBM and the Ministry of Education. IBM DB2 UDB can run freely in various systems, and it is the only database in the industry that can provide the same function for systems of different sizes. You can get certification by passing one or more exams. Passed the entrance exam? DB2 Series Fundamentals, 5 12? , you have obtained IBM DB2 user authentication. Next, take any of the four Certified Solution Specialist (CSE) exams. For example, to become a DB2 certified developer, you must pass? DB2 series application development, 5 14? Exam. Or through? DB2 UNIX and Windows DBA, 5 13? Become a certified UNIX/Windows DBA or pass the exam? DB2 OS/390 DBA，5 16？ Get mainframe DBA certification. A very good feature of DB2 authentication process is its modularity. After passing the entrance exam (5 12), you can take any exam you like. Every time you pass the exam, you will get another certification.
What is the IBM DB2 certification exam like?
The topic of DB2 exam is more difficult. The percentage of questions that need to be answered correctly to pass the exam is very low. For example, in order to get the DB2 developer certificate, you only need to get 55% and 57% correct answers in two exams to pass. The experience of IDUG seminar shows that the pass rate of DB2 examination is 75%. Remember, all questions are multiple-choice questions, so you should answer every question (you won't lose points if you answer wrong, at least you can guess the answer). Is the examination software allowed? Mark? Questions to return to in the future, so that you can skip these questions and come back to solve them later.
There is enough time for the exam. If you examine your solution carefully, it will only take the specified time. When you finish the exam, click the finish button, and the software will immediately show whether you passed or not. You can print out your grades on the spot through a printer connected to the LAN. If you pass, IBM will mail you certificates, brooches and other things that can be hung on the wall? Member? Benefits. What will happen if you don't finish the exam within the specified time? The screen will freeze, and a message will tell you that the exam is over. You will see the same as when you click the Finish button? Did you pass? News.
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