System context diagram

The objective of the system context diagram is to focus attention on external factors and events that should be considered in developing a complete set of systems requirements and constraints.System context diagrams are used early in a project to get agreement on the scope under investigation.

Context diagrams can be developed with the use of two types of building blocks: For example, "customer places order."

They can use ovals, stick figures, pictures, clip art or any other representation to convey meaning.

Decision trees and data storage are represented in system flow diagrams.

Where twenty or more interconnects must be displayed, the diagrams become quite complex and can be difficult to read.