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Data Flow Diagrams (DFD) visualize data flows in information systems.
They show: what kinds of data input to and output from the system; where the data come from and go to; where the data is stored.
DFDs are used for design and analysis of business and engineering information systems.
They are also used for data processing visualization.
DFD template
DFD template, process, external interactor, entity,

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Business Process Modeling Notation Template

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