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Abstract

Use case modeling is a popular technique for representing the functional requirements of an information system. The simple graphical notation of use case diagrams, accompanied by well-structured narrative descriptions, makes use case models fairly easy to read and understand. This simplicity, however, belies the challenges associated with creating use case models. There is little, if any, theory underlying use cases, and little more than loose guidelines for creating a complete, consistent, and integrated set of use cases. We argue that there is a need for more rigor and consistency in the grammatical constructs used in use case modeling. Toward this end, we present a theoretically- and practice-based assessment of use case modeling constructs, and make recommendations for future research to improve and strengthen this technique.

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