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Use Case diagrams- A use case diagram depicts different users of the system and the functions of the system. Actors interact with a use case and the functions are called as use cases. Use cases diagrams describe the interaction between the actor and the use case.
- Use case diagram expose the requirements of the system.
- For e.g. a use case diagram for an ATM would involve the actor to be ATM and the user. Use cases could be, withdraw money, deposit cheque
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