whereas Physical DFD is concerned with the implementation of the system. An information system’s data flow is shown in a Data Flow Diagram (DFD). An information system (usually a process diagram) ...

With a focus on how the business operates at a high level, logical data flow diagrams are a great starting point, providing the outline needed to create more detailed physical data flow diagrams.

A data-flow diagram is the best way of representing a flow of data through a process or a system. Such a diagram will provide information about the outputs and inputs of each entity and the ...