Modelos de DFD Yourdon Demarco

Modelos de DFD Yourdon DeMarco

A data-flow diagram (DFD) is a way of representing a flow of data of a process or a system (usually an information system). it shows how data is processed by a system in terms of inputs and outputs. DFD is built using standardized symbols. There are several notations for displaying data-flow diagrams. Yourdon DeMarco is one of these DFD notations.

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