...The amount of software used to be measured in man-months, which is the number of people and months it takes, but this shows that man-months are not interchangeable. It is useful to view software development as a software life cycle consisting of several stages, such as requirements analysis and system definition, system design, program design, programming, software testing, and operation and maintenance, in line with the PDCA (Plan-Do-Check-Action) cycle of quality control. Between each stage, standard specifications such as functional specifications, system design specifications, and program design specifications are prepared. ... *Some of the terminology that refers to "operation and maintenance" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…何人の要員が何ヵ月かかるかを人月(マンマンス)という単位で表してソフトウェアの量を測る目安にしていたが,マンとマンスが可換でないことを示したことになる。 ソフトウェアの開発は,品質管理のPDCA(Plan-Do-Check-Action)サイクルに合わせて,要求分析システム定義,システム設計,プログラム設計,プログラミング,ソフトウェアテスト,運用保守,といういくつかの段階からなるソフトウェアのライフサイクルで捉えると便利である。それぞれの段階間には,機能仕様書,システム設計仕様書,プログラム設計仕様書,といった定型の仕様書を用意する。… ※「運用保守」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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