A diagram that shows the types of data produced by one business process and used as input by another. It also refers to a representation of the flow of data into, out of, and between procedures, systems, or subsystems. Data flow diagrams show the actual flow of data between designed business activities and data stores, thus depicting how two activities interact. Process flow diagrams show the dependencies that exist for business processes but do not indicate how the dependencies may be manifested (see also data structure diagram and entity relationship diagram).
