Process Modeling Technique - DFD


Process modeling is a formal way of representing how an information system operates. It illustrates the processes or activities that are performed and how data moves among them in the system environment. Process modeling involves representing the functions, processes, manipulate, store and distribute the data among them and its environment. There are many different process modeling techniques can be used today. The most popular one is Data flow diagram (DFD). Data flow diagramming is a technique that diagrams the processes and the data passes among them in the system. It’s a traditional process modeling technique of structured analysis and design. Data flow diagram uses various symbols to show how the system transforms input data into useful information. There are two standard sets of data flow diagram symbols being used; DeMarco and Yourdon and Gane and Sarson.

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