A context diagram is the simplest and most abstract type of DFD. It shows the system as a single process with inputs and outputs from external entities. It provides a high-level overview of the ...

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 level 1 DFD. Together, they make up ...