One tool that is useful during both analysis and design is the ______,which is a pictorial

Question

One tool that is useful during both analysis and design is the ______，which is a pictorial representation of the items of infonnation(entities)within the system and the relationships between these pieces of information．

A．data dictionary

B．dataflow diagram

C．use case diagram

D．entity-relationship diagram

Answer 1

正确答案：D
解析：在系统分析和设计中同样适用的工具是答案D实体关系图，它通过图形形式，表现系统内的实体信息以及这些信息之间的关系。