NDLI: Negative scenarios for implied scenario elicitation

Content Provider	ACM Digital Library
Author	Magee, Jeff Kramer, Jeff Uchitel, Sebastian
Abstract	Scenario-based specifications such as Message Sequence Charts (MSCs) are popular for requirement elicitation and specification. MSCs describe two distinct aspects of a system: on the one hand they provide examples of intended system behaviour and on the other they outline the system architecture. A mismatch between architecture and behaviour may give rise to implied scenarios. Implied scenarios occur because a component's local view of the system state is insufficient to enforce specified system behaviour. An implied scenario indicates a gap in the MSC specification that needs to be clarified. It may simply mean that an acceptable scenario has been overlooked and should be added to the scenario specification. Alternatively, it may represent an unacceptable behaviour which should be documented and avoided in the final implementation. Thus implied scenarios can be used to iteratively drive requirements elicitation. However, in order to do so, tools for coping with rejected implied scenarios are needed. The contributions of this paper are twofold. Firstly, we define a language for describing negative scenarios. Secondly, we complement existing implied scenario detection methods with techniques for accommodating negative scenarios.
Starting Page	109
Ending Page	118
Page Count	10
File Format	PDF
ISSN	01635948
DOI	10.1145/605466.605484
Journal	ACM SIGSOFT Software Engineering Notes (SOEN)
Volume Number	27
Issue Number	6
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	1979-04-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Negative scenarios Implied scenarios Msc
Content Type	Text
Resource Type	Article

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