Context Diagrams

This technique is a visual representation which shows the interaction between the business system and the user. The business system can be process, device or equipment. The person (user) who interacts with the system will be called as “Actor”. Actor provides the input to the system and the system throws the output. This output will become the information for the Actor for further analysis.

For example, as an user (Actor) I want to know my Body Mass Index (BMI). I will provide the input, to system which can be a simulator, the height and weight. The system throws the output which is BMI. Using this BMI, I will decide what action should be taken. Either increase weight or decrease weight.

Context Diagrams is used under the processes Collect Requirements.