Garth and Annabelle,
The purpose of the context data
flow diagram is to establish the initial project scope. It only shows the systems main
interfaces. Since things are always
changing in a system, this model is bound to change and develop to grow and
adapt to the environment and the scope of the project. Whereas a data flow analysis is used for
gathering data on possible values. See
below for diagrams..I know a picture is worth a thousand words and will help
you better understand the difference between a context data flow and data flow
analysis diagram!
V/R,
Your PM
