A survey on issues in non-functional requirements elicitation

One of the primary responsibilities of requirement engineer is the elicitation of non-functional and functional requirements. Functional requirements sketch out the functionality, the system has to be performed while non-functional requirements compel the restrictions on this functionality. Software industry is raising its demand for not only the required functionality but the necessity of non-functional requirements too such as performance, security, usability, security, privacy etc. The current practice in the industry is to deal with functional requirements as first class requirements while non-functional requirements are only catered at design and implementation level. This approach leaves a serious flaw in the system design towards user satisfaction and often results in the failure of projects such as the classic example of London Ambulance System[1]. The chances of software success can be maximized when dealing with NFR at the requirements level. This literature survey is a first effort of its kind to seek key NFR challenges and issues while elicitation level of requirement engineering. It also find-outs the approaches and methods that are suggested in literature to deal with these issues.

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