On non-functional requirements: A survey

In this paper we give the details on Non-Functional Requirements and its importance in various fields. We also investigate the effect of working out for the Non-functional Requirements which leads to the discovery of new Functional Requirements. After the coding phase in the Software Development Life Cycle (SDLC), during the process of articulating the Non-Functional Requirements the software analysts come up with the new unexpected Functional Requirements and which further creates a vicious circle. An effort is made to present the recent research in the field of finding, specifying and rectifying the Non - Functional attributes. This paper gives the details of past and current research, thus giving the ideas to researchers for future work.