The software requirements feasibility study in software engineering pdf description of features and functionalities of the target system. Requirements convey the expectations of users from the software product.
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The requirements can be obvious or hidden, known or unknown, expected or unexpected from client’s point of view. The process to gather the software requirements from client, analyze and document them is known as requirement engineering. This feasibility study is focused towards goal of the organization. This study analyzes whether the software product can be practically materialized in terms of implementation, contribution of project to organization, cost constraints and as per values and objectives of the organization. It explores technical aspects of the project and product such as usability, maintainability, productivity and integration ability. The output of this phase should be a feasibility study report that should contain adequate comments and recommendations for management about whether or not the project should be undertaken. If the feasibility report is positive towards undertaking the project, next phase starts with gathering requirements from the user.
Analysts and engineers communicate with the client and end-users to know their ideas on what the software should provide and which features they want the software to include. SRS is a document created by system analyst after the requirements are collected from various stakeholders. SRS defines how the intended software will interact with hardware, external interfaces, speed of operation, response time of system, portability of software across various platforms, maintainability, speed of recovery after crashing, Security, Quality, Limitations etc. The requirements received from client are written in natural language. It is the responsibility of system analyst to document the requirements in technical language so that they can be comprehended and useful by the software development team. User Requirements are expressed in natural language.
Technical requirements are expressed in structured language, which is used inside the organization. Design description should be written in Pseudo code. Format of Forms and GUI screen prints. Conditional and mathematical notations for DFDs etc. After requirement specifications are developed, the requirements mentioned in this document are validated. User might ask for illegal, impractical solution or experts may interpret the requirements incorrectly. This results in huge increase in cost if not nipped in the bud.
The developers discuss with the client and end users and know their expectations from the software. The developers prioritize and arrange the requirements in order of importance, urgency and convenience. If requirements are ambiguous or there are some conflicts in requirements of various stakeholders, if they are, it is then negotiated and discussed with stakeholders. Requirements may then be prioritized and reasonably compromised. The requirements come from various stakeholders.