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42.软件开发方法 软件外发是一项复杂的系统工程。60年代爆发了软件危机,促使人们探讨科学的软件开发方法,经过长期的开发实践,提出了许多软件开发方法,其中主要有生命周期法、原型法和面向对象法等。 (1)生命周期法。软件开发严格按系统调查与分析、系统设计、系统实现、系统调试、运行维护和废弃等阶段进行这种方法要求系统说明书应准确地表达用户的要求,并且在以后阶段不会发生变化。
42. Software Development Methods Software Outsourcing is a complex system engineering. The software crisis broke out in the 1960s, prompting people to explore scientific software development methods, after a long period of development and practice, put forward many software development methods, including life cycle method, the prototype method and object-oriented method. (1) life cycle method. Software development in strict accordance with the system of investigation and analysis, system design, system implementation, system commissioning, operation and maintenance and disposal of such phase requires the system manual should accurately express the user’s requirements, and will not change in the future stage.