Data flow diagram

Updated: 04/26/2017 by Computer Hope

DFD or data flow diagramA data flow diagram (or DFD) is a graphical representation of the flow of data through an information system. It shows how information is input to and output from the system, the sources and destinations of that information, and where that information is stored.

Information not shown in a DFD includes how long processes take, and whether those processes operate in series or parallel. Such information is typically shown in a flowchart instead.

Data flow, Processes, Programming terms