Foreword
When I came up with the use case concept in 1986, it was based on many years of work in component-based system development. We had had many other different techniques to do the job, techniques that were overlapping and had gaps. With use cases we got a tool with many facets. Some of them are:
• Use cases are the requirements capture vehicle.
• Use cases are the base for defining functional requirements.
• Use cases facilitate envisioning applications.
• Use cases assist in system delimitation.
• Use cases are the means to communicate with end users and customers.
• Use cases provide the dynamic, black-box view of the system.
• Use cases are the base for object derivation; objects naturally fall out of use cases.
• Use cases provide ...
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