在采用结构化方法进行软件分析时，根据分解与抽象的原则，按照系统中数据处理的流程，用（ ）来建立系统的逻辑模型，从而完成妙工作。
- A.ER图
- B.数据流图
- C.程序流程图
- D.软件体系结构
正确答案及解析
正确答案
解析
本题考查结构化分析方法中图形工具的作用。数据流图摆脱系统的物理内容，在逻辑上描述系统的功能、输入、输出和数据存储等，是系统逻辑模型的重要组成部分。
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