摘要： 本文从软件方法学的角度,分析了传统的瀑布模型的缺陷,讨论了用可执行的数据流图(DFD)来扩展结构化分析方法(SA)的技术,使快速成型技术与SA方法有机地结合起来。文章介绍了国外几个采用可执行DFD方法的系统,并简述了作者正研究开发的FD-CASE/ESAT(Exeutable Struc-tured Analysis Tool)系统。

Abstract: This paper analyses shorfcomings"C, tfeej ^Ifftditional "waterfall from the point of view of software methodolegyses how to expand Structured Analysis (SA) method by using executable data flow diagram(DFD) to integrate rapid prototypiny with SA. A few systems using executable DFD are introduced and the system FD-CASE/ESTA, which is being developed by the author, is presented in brief.