The context diagram represents the highest level of a data flow diagram (DFD). It illustrates the
entire system as a single process and shows the interactions between the system and external
entities (actors, users, or systems). This overview is essential in understanding system boundaries
and external data flows.
BABOK® Reference – Technique: Data Flow Diagrams (Section 10.13):
“The context diagram is the highest level in a data flow diagram, showing the overall system
boundaries, external entities, and major information flows.”
