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Command CICS : ウィキペディア英語版 | Command CICS
Command CICS or Command-CICS is a software product that allows organizations to migrate from "Macro level" CICS to "Command level" CICS without any re-programming so that companies could migrate to later versions of CICS that did not support macro level application programs.〔(【引用サイトリンク】title=IBM - Command/CICS )〕 The later versions of CICS offered many advantages over previous versions yet tens of thousands of application programs were effectively locked out of the new version unless they were prepared to operate two completely different versions of CICS on the same Operating Systems, creating both operational and maintenance problems. Two different, simultaneous, CICS Licenses were also required. ==History== When CICS was first released by IBM in the late 1960's, it used IBM Assembler macros to generate the API system calls to the CICS teleprocessing monitor kernel. This was also true even if programs were written in COBOL or PL/1. Ken Dakin an independent programmer and CEO of APT Ltd. in the U.K., who was also responsible for programming IBM OLIVER (CICS interactive test/debug), realized that by creating a middleware product, the problem could be solved for almost all situations. Ken Dakin approached IBM to market his product but received no interest at the time, despite the fact that tens of thousands of their clients application programs would need to be converted or rewritten for the new versions of CICS, costing many millions of dollars.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Command CICS」の詳細全文を読む
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