Abstract
The scenario technique is an interesting approach for eliciting requirements. A formal approach to scenario generation has made it even more attractive. The next logical step is to integrate several scenarios into one single, consistent, specification. In this work, a mixed approach, involving formal and informal steps is proposed for performing this task. The system's formal specification is expressed as a finite state machine. The specifications of two interacting scenarios are integrated in a procedure involving formal and informal steps. Then several algorithms based on the properties of the model, are applied to detect three classes of errors: mistakes made by the analyst during the informal steps of the integration, inconsistencies between the scenarios, and incompleteness of both scenarios. Each algorithm detects the corresponding specification errors and in addition, suggests the corrections to apply. The formal techniques applied in this work could be the basis of a CASE tool for scenario‐based requirements engineering.
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Lustman, F. A formal approach to scenario integration. Annals of Software Engineering 3, 255–271 (1997). https://doi.org/10.1023/A:1018973501964
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DOI: https://doi.org/10.1023/A:1018973501964