There are two different standard sets of DFD symbols and each set consists of three symbols that represent the same things.

Question

Quizplus · Accepted Answer

There are indeed two different standard sets of DFD (Data Flow Diagram) symbols, known as Yourdon and Coad/Yourdon and Gane and Sarson, but each set consists of more than three symbols to represent processes, data flows, data stores, and external entities, not just three symbols.

There Are Two Different Standard Sets of DFD Symbols and Each