NON-FUNCTIONAL REQUIREMENTS AS CONSTRAINTS AND THEIR VALUES IN SOFTWARE DEVELOPMENT: A REVIEW (original) (raw)
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Agile method means deliver quickly, modify quickly and change frequently. Main purpose of designing agile software development process is to solve the difficulty of delivering high quality software on time and in under continuously changing requirements as per business need. Now days various agile software development process (Scrum, Extreme Programming (XP), Feature Driven Development (FDD) etc.), used to deliver quality functional requirements (FR). In software development process engineers are mainly focused only on functional requirements under the stress of deploying the software within a time. But Non Functional Requirement (NFR) is also important element of the development process. To develop quality software NFRs are equally responsible as FRs. NFR plays very sensitive role to deliver quality software products. Most requirement modeling methods are mainly concentrated on FRs where as NFRs received less attention. Discovering NFR is not easy job. There is no proper NFR elicitation method is available. In this paper we design a tool which is used to generate NFRs such as security, performance, scalability etc. This tool helps to the project manager and scrum team in risk evaluations, planning and visualization of the proposed plan.
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The elicitation of non-functional and functional needs is one of the most critical jobs of a requirement engineer. This scenario involves the imposition of limits on non-functional needs, whereas functional requirements call for the operation of a system in order to carry out functionality. Over the last few years, agile software development approaches have gained widespread acceptance in the software industry as a problem-solving paradigm. Non-functional requirements (NFRs) are frequently cited as a point of contention in non-functional requirements (NFR) approaches. As well as functional requirements like speed and efficiency, security is desired, amongst a host of other things. Aspects like usability, security, and privacy must all be taken into account. Functional needs must be treated as though they were first-class under the current industry standard of practice. Functional requirements are distinguished from non-functional requirements by the fact that only implemented requir...
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Software testing is the process of verification and validating the product. This process detects the difference between actual output and expected output. Agile software development methods promote adaptive planning, system development, timely delivery and scalability. There is various agile software development methods are available such as scrum, XP, Feature Driven Development (FDD) etc, used to deliver quality functional requirements (FR). In software development process software engineers are mainly concentrating only on functional requirements under the pressure of deploying the software as early as possible. But NFR is also important element of the development process. NFR is responsible for success and failure of the system. In this paper we have presented survey on need of generation of non functional requirements such as security, performance etc. NFR describes not actually what system will do but how the system will do it. Keywords— Agile software process, FR, NFR, Require...
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Non-Functional Requirements (NFRs) are very important since they play a significant role for the system’s behavior. Unfortunately, in Agile methods, the NFRs are overlooked until the later steps of software development. The negligence of NFRs elicitation is happened due to lack of standardized guidelines that can be referred by the software practitioners. Moreover, empirical studies on the current practices of NFRs elicitation in Agile software development organizations, specifically focused on security requirements and knowledge required are still limited. To the best of our knowledge, the study also has never been done before in Jordan context. Therefore, this study was conducted to address the abovementioned lacking issues. The study was conducted using quantitative approach. The questionnaire was distributed through online and faceto-face communication. The data was analyzed using descriptive statistical analysis. Hence, this paper presents the results from the pilot study that ...
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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.