Why is use case modeling helpful for system development?
Before you start a project, you can create use case diagrams to model a business so that all participants in the project have a common understanding of workers, customers, and business activities.
When gathering requirements, you can create use case diagrams to capture system requirements and present to others what the system should do.
During the analysis and design phase, you can use the use cases and roles in the use case diagram to identify the classes needed for the system.
During the testing phase, you can easily identify test cases based on the use cases.
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