Task 2 Resource

Context diagram template

Planning table and quality checks for the Yourdon/DeMarco context diagram.

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Task 2 Context Diagram Template

System Name

Write the system name in the central process bubble.

Required Elements

  • One central process only (the whole system).
  • At least 3 external entities.
  • Labelled data flows in both directions where relevant.

Planning Table

External entity Data into system Data out of system

Quality Check

  • Central process is clearly named.
  • No internal sub-processes are shown.
  • Data flow labels are specific, not generic.
  • Arrows indicate correct direction.