13+ Advantages Of Use Case Diagram. Your use case diagram can model different scenarios where your system or application interacts with people, systems, or organizations. Use case diagram is a sub class of behavioral diagrams which shows how a system interacts with the external entities.
First of all, the user should create his the payment can be done through paypal or credit card. A use case diagram at its simplest is a representation of a user's interaction with the system that shows the relationship between the user and the different use cases in which the user is involved. So, it is relatively sparse about the details of how the system behaves internally and how the external environment is advantages:
Use case diagrams model the functionality of a system using actors and use cases.
13+ Advantages Of Use Case Diagram. Here, we have more than one actor, they are all placed outside the system. Use case diagrams provide a very good overview of the entire system on a highly abstract level. Use case diagrams model the functionality of a system using actors and use cases. This is the use case diagram of 'login' case.