There are three degrees of detail when writing a use case. First there is a brief use case which consists of a few sentences summarizing the use case. Next is a casual use case which includes a few paragraphs of text summarizing the use case. Then there is a fully dressed use case which is a formal document based on a detailed template with fields for various sections.
A use case can be very beneficial to a business if used right. Some of the benefits include the scope getting understood better, consideration and discussion of alternative paths, organization and structure of the requirements model, making it easy to take a staged delivery approach to projects; test cases can be directly derived from use cases, and effective execution of performance engineering.
Along with benefits, there are limitations when using use cases. Some of these limitations include use case flows are not well suited to easily capturing non-interaction based requirements of a system or non-functional requirements, use case templates do not automatically ensure clarity, use case developers often find it difficult to determine the level of user interface... [continues]
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(2008, 03). Use Cases. StudyMode.com. Retrieved 03, 2008, from http://www.studymode.com/essays/Use-Cases-137856.html
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