Data flow diagram
Updated: 12/31/2022 by Computer Hope
A 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, information sources and destinations, and where it's stored.
Information not shown in a DFD includes how long processes take, and whether those processes operate in series or parallel. Such information is often shown in a flowchart instead.