Physical data flow diagrams. Physical data flow diagrams provide detailed implementation information. They may reference current systems and how they operate, or may project the desired end-state of a ...

What Is Level 1 Data Flow Diagram? Describe a level 1 DFD. Context diagrams (level 0 DFDs) represent the entire system as a single process in a diagram. There are four main processes outlined in a ...

For example, a context diagram shows only one process and its external entities, while a logical DFD shows multiple processes and data flows. A physical DFD shows how data is actually stored and ...