Data Flow Design

The Law of Perspective:

• Close ==> Appreciation of Detail (+), Distorted Perception (–)
• Far ==> Accurate Perception (+), Loss of Detail (–)

Flashmob Recreates Rembrandt Painting in Dutch Shopping Centre

 

Data flow diagramming - Lecture Handouts

Solution to DFD with errors

Example of diagram "leveling" in other than information systems

DFD solution to telephone bill payment

 

The following links contain good explanations and examples of DFDs.

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Read Wikipedia's article on Data Flow Diagram

Click here to read a very interesting case study of structured analysis of the Acme Fashion Supplies Operations, with special emphasis on data flow diagramming.