![]() ![]() To identify internal and external factors – This might sound simple but in large complex projects a system can be identified as an external role in another use case.Īctor in a use case diagram is any entity that performs a role in one given system.You can highlight the roles that interact with the system and the functionality provided by the system without going deep into inner workings of the system. For a high-level view of the system – Especially useful when presenting to managers or stakeholders. ![]()
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