Draw a Context Diagram PDFDs are constructed in levels that correspond to the levels in our hierarchy chart. ... outputs between a system and the rest of the business and outside world, a typical context diagram might show as many as fifty or more data flows. ... PDFD for the Customer Services Subsystem The context diagram process of Figure 7.14 is exploded into a more detailed PDFD in Figure 7.15.
|Title||:||System Analysis & Design Methods|
|Author||:||Jeffrey L. Whitten, Lonnie D. Bentley, Thomas I. M. Ho|
|Publisher||:||Times Mirror Magazine - 1986|