An investigation into the notion of non-functional requirements

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Conference Proceeding
Proceedings Of The 2010 - 25Th Annual Acm Symposium On Applied Computing, 2010, pp. 311 - 318
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Although Non-Functional Requirements (NFRs) are recognized as very important contributors to the success of software projects, studies to date indicate that there is still no general consensus in the software engineering community regarding the notion of NFRs. This paper presents the result of an extensive and systematic analysis of the extant literature over three NFRs dimensions: (1) definition and terminology; (2) types; and (3) relevant NFRs in various types of systems and application domains. Two different perspectives to consider NFRs are described. A comprehensive catalogue of NFRs types as well as the top five NFRs that are frequently considered are presented. This paper also offers a novel classification of NFRs based on types of systems and application domains. This classification could assist software developers in identifying which NFRs are important in a particular application domain and for specific systems.
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