UseCaseAnalyse

UseCaseAnalyse is a structured approach used in requirements engineering to examine and refine use cases in order to understand system behavior, identify stakeholders, and validate requirements. It concentrates on describing how users interact with a system to achieve goals and on capturing the necessary functional and non-functional requirements through use-case scenarios.

The process typically begins with eliciting actors and goals, followed by documenting primary and alternate flows, preconditions, postconditions, and exceptional conditions. Analysts develop use-case models, often supplemented by diagrams, to illustrate interactions and dependencies. The analysis emphasizes traceability from stakeholder needs to system functions and to test cases, helping to reveal gaps and conflicts early in the project.

Outcomes of UseCaseAnalyse include a requirements specification, a set of test scenarios, and design considerations that inform architectural and implementation decisions. The approach supports risk assessment by surfacing missing or inconsistent requirements and aids validation through walkthroughs with stakeholders. It is commonly aligned with UML use-case diagrams and can be integrated with other techniques such as user stories, activity diagrams, or sequence diagrams.

Limitations include a potential focus on nominal success paths at the expense of alternative flows, and the need for ongoing maintenance to keep models aligned with changing requirements. UseCaseAnalyse is typically applied alongside other modeling and analysis methods, such as domain analysis and non-functional requirements specification, to provide a comprehensive view of system requirements.