结构化分析（Structured Analysis,SA是面向数据流的需求分析方法，______不属于SA工具。
- A.分层的数据流图
- B.数据词典
- C.问题分析图
- D.描述加工逻辑的结构化语言、判定表或判定树
正确答案及解析
正确答案
解析
本题考查对软件开发工具相关内容的了解。结构化方法(Structured Method)是强调开发方法的结构合理性以及所开发软件的结构合理性的软件开发方法。针对软件生存周期各个不同阶段，它包括结构化分析(SA)、结构化设计(SD)和结构化程序设计(SP)等方法。结构化分析方法给出一组帮助系统分析人员产生功能规约的原理与技术。它一般利用图形表达用户需求，使用的手段主要有数据流图、数据字典、结构化语言、判定表以及判定树等，其中不包括问题分析图。
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