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For College Students

What is a Use Cases in Use Case Diagram?

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In the next video, you will be introduced to the concept of a use case, which is one of the fundamental building blocks of a use case diagram.

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In the previous video, you learnt about use cases. Use cases represent what the system will be used for or what functionality the system will perform.

 

A use case is drawn as an oval, and what needs to be done is written inside it. For example, if your system will be used for raising invoices, then this use case can be represented as the following use case diagram.

 

 

Also, the use cases need not be in any particular order and can be placed randomly in your Use Case Diagram. As it is just an oval with the requirement written inside it, it can be easily drawn by a business person who has no knowledge of programming and conveys his requirements to the software developer. Also, as different functionalities are segregated into different ovals, it makes easier for developers to track their progress of building the system.

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Now you are familiar with the Use-Cases, which are fundamental building blocks of a Use Case Diagram. They can be placed in any order and represented as an oval.