Zusammenfassung
Scenario based approaches are becoming ubiquitous in systemsanalysis and design but remain vague in definition and scope. A surveyof current practices indicates we must offer better means forstructuring, managing, and developing their use in diverse contexts. TheEuropean Esprit project Crews (Cooperative Requirements Engineering withScenarios) are seeking a deeper understanding of scenario diversity,necessary to improve methodological and tool support for scenario basedrequirements engineering. They follow a two pronged strategy to gainthis understanding. First, following the “3 dimensions”requirements engineering framework developed in the precursor Natureproject (K. Pohl, 1994), they developed a scenario classificationframework based on a comprehensive survey of scenario literature inrequirements engineering, human computer interaction, and other fields.They used the framework to classify 11 prominent scenario basedapproaches. Secondly, to complement this research framework, theyinvestigated scenario applications in industrial projects through sitevisits with scenario user projects. The article focuses on these sitevisits. It was found that while many companies express interest inJacobson's use case approach, actual scenario usage often falls outsidewhat is described in textbooks and standard methodologies. Userstherefore face significant scenario management problems not yetaddressed adequately in theory or practice, and are demanding solutionsto these problems
