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Rationale-based use case specification

: Dutoit, A.H.; Paech, B.


Requirements engineering 7 (2002), Nr.1, S.3-19 : Ill., Lit.
ISSN: 0947-3602
Fraunhofer IESE ()
qualitative case studie; rationale management; requirements specification; use case

The requirements specification - as outcome of the requirements engineering process - falls short of capturing other useful information generated during this process, such as the justification for selected requirements, trade-offs negotiated by stakeholders and alternative requirements that were discarded. In the context of evolving systems and distributed development, this information is essential. Rationale methods focus on capturing and structuring this missing information. In this paper, we propose an integrated process with dedicated guidance for capturing requirements and their rationale, discuss its tool support and describe the experiences we made during several case studies with students. Although the idea of integrating rationale methods with requirements engineering is not new, few research projects so far have focused on smooth integration, dedicated tool support and detailed guidance for such methods.