Question

What is a data flow diagram (DFD)?

a.

A method of functional decomposition with respect to the flow of data.

b.

A black box which transforms some input stream into some output stream.

c.

A tool to represent data flows between processes, external entities and data stores.

d.

A design method mostly used in conjunction with data flow diagrams.

Posted under Modeling Software Engineering

Answer: (a).A method of functional decomposition with respect to the flow of data. Explanation:The data flow diagram is defined as a method of functional decomposition with respect to the flow of data. It represents data flows between processes, external entities, and data stores.

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