There's only one last breath left. Top Ten IT technology _powerbuilder

It technology development is always fast, so it is inevitable that the emergence of new technologies and the elimination of old technology, and today's hot technology to tomorrow may be the sunset industry, there is no iron rice. Of course, a technology usually does not die completely, but basically disappears with the passage of time in the eyes of most people, can only hide in an unknown corner.

Adpickles Company founder Stewart Padveen said: "In the technical field, degradation is relative, not absolute." ”

Here are the 10 it technologies that Computerworld has summed up in the "Sunset" phase:

1. Cobol

The millennium Bug (Y2K) crisis has given COBOL a second chance to regain new life, but almost no one remembers it after 6.5, and it lost its shape in the university's computer department class. If you still want to learn it, you can go to South Illinois University, where a Professor Mary Sumner is offering COBOL courses, plus two big companies and some entry-level jobs still using COBOL.

2, Nonrelational DBMS (non-relational database management system)

In the 1980s, the database management system is divided into two categories, one is the hierarchical system, such as IBM's IMS, SAS Institute Inc. system 2000, the second is network systems, such as CA IDMS, Oracle DBMS (VAX DBMS predecessor), Today, however, they are replaced by relational database systems expressed in SQL, such as DB2, Oracle, and SQL Server.

3, non-IP network

The TCP/IP protocol now dominates the web world, so there is little room left for the IBM SNA (System network architecture), with a market return of less than 1% per cent and a penny for 1922. Although many banks, insurance agencies and other companies are still investing heavily in SNA networks, there is basically no school to open the course, after all, TCP/IP has spread over every corner of the network.

4, Cc:mail

Internet-based Save and forward e-mail system, from Lotus Company, in the 80 's popular, the user reached 20 million people, but due to the lack of progress to keep up with the Times, by 2000, the time to fade out of the history stage, now only the California Mountain view of the global system Services Corp. also offers commercial support. Now, people are talking more about more complex systems, like Microsoft's Exchange or Lotus Notes.

5, ColdFusion

Allaire Corp. 's network programming language, released in the middle of the 90, was replaced by other development platforms, such as ASP,. NET, Java, Ruby on Rails, Python, PHP, and so on, The days of ColdFusion programmers are also sadder than the day. Allaire was purchased by Macromedia and then became part of Adobe.

6, C

For many students who are not computer majors, C language is the introduction of programming technology, but with the popularity of network technology, C language is outdated. While C + + and C # are still very dynamic, simple C programmers are rarely seen-either unemployed or retrained.

7, PowerBuilder

PowerSoft Inc., a client-server development tool released in 1994, was bought by Sybase Inc and was once a formidable competitor to Oracle, with programmers on the ground blooming. Today, PowerBuilder programmers are no longer interested in the value of COBOL programmers. Anyway, with the ability to generate. NET code PowerBuilder 11 is about to be released this year, and it still has some time to live.

8, NetWare Certification engineer (CNE)

More than 10 years ago, NetWare certified engineers were the object of competition, especially when Novell Inc. occupied 90% of the PC server market, but soon became a thing of the past. Novell said itself, it seems to be a blink of an eye, in two years, with Novell certified people have been transferred to the NT camp. At least until 2015, Novell will continue to support NetWare 6.5, but Master CNE, NetWare 5 CNE and other certification has been canceled, NetWare 6 CNE also insist on not long.

9, PC network administrator

As the industry accelerates to a solid Windows server, the need for PC network administrators has been rapidly reduced, as evidenced by the cancellation of courses from many schools.

10, OS/2

Microsoft and IBM in 1987 launched a joint operating system, Bill Gates also once made "OS/2 is destined to be the most important operating system," The prophecy, but the relationship between the two sides did not handy the announcement, and after several rumors, IBM finally in 2005 completely stop OS/2 sales , but there are still a lot of people studying it, Serenity Systems International Company is also in the name of "eComStation" continue to sell the system.