Requirement Engineering :-
Requirement Engineering is the systematic use of proven principle and approaches ,techniques ,language, and tool for the cost effective analysis, documentation and ongoing evolution of the user needs and specification of the external behaviour of a system or software to satisfy these user needs.
Both the software engineering and the customer take an active role in software Requirement Engineering . A set of activities i.e often referred to as analysis . Hence it is also called as Software Requirement Engineering.
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