Context diagram

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Context diagram with interfaces and data flows

A context diagram is used to model a system environment in an early design or analysis phase (see Structured Analysis ). The context diagram represents the highest hierarchical level of data flow diagrams . It is an abstract data flow diagram with which the interfaces of the system to its environment are mapped. It consists of exactly one process , which is represented as a circle and given the number 0. This process is gradually broken down and broken down into its components. The components that interact with the system are represented as rectangles, data flows are represented by arrows from or to the process. The context diagram originally comes from business informatics and is used, for example, in enterprise application integration to visualize the requirements for a system. Only when the structured analysis to dynamic analysis is extended, the otherwise not provided are control flows represented.

When using UML , the use case diagram usually takes on the role of the context diagram.

Web links

• Easy Requirement Blog: System context analysis thesis
• Process blog: via system context
• Document software architectures: combine - the system context
• Infforum: System delimitation - agreement between client and contractor on the scope of the project
• Capri-Soft blog