Context diagrams are among the tools used in the design.

• Using context diagrams, an overview of the complete information system is represented.

• The system, together with its inputs and outputs, is shown as a single process.

• Data flow arrows link the single process to the external entities.

• Each component shown has a label.

• A context diagram does not display internal operations or data repositories.

An exemplar template for the context diagram - A system that uses paper-based billing systems using customer credit and debit cards.