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Validating software requirements

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System testing is a major validation event where a system is validated against the user's statement of requirement.It aims to show that all faults which could degrade system performance have been removed before the system is operated.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 is a four step process, which includes – Let us see the process briefly - When the client approaches the organization for getting the desired product developed, it comes up with rough idea about what all functions the software must perform and which all features are expected from the software.Referencing to this information, the analysts does a detailed study about whether the desired system and its functionality are feasible to develop.In contrast the verifier makes sure that the specifications are followed to the letter - was the Wright Flier constructed as per its specification?In this way verification and validation are complimentary disciplines.

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The requirements can be obvious or hidden, known or unknown, expected or unexpected from client’s point of view.Trust, but verify (a translation of the Russian proverb: "doveryai, no proveryai") - Frequently used by U. president Ronald Reagan (in regard to nuclear disarmament talks between the USA and Russia); also a favourite with Soviet revolutionary Vladmir Lenin Verification and validation is a systems engineering discipline that determines if work products comply with their specifications and are fit for their intended use.More specifically: The Wright brothers experienced one of mankind's most sublime moments of validation when their aircraft The Wright Flyer proved it was fit for the purpose for which it was designed: for man to fly.The verifier establishes that a software product faithfully implements all the requirements documented in a software requirements specification (SRS).In contrast the validator establishes that the SRS is a true reflection of the user's needs.SRS is a document created by system analyst after the requirements are collected from various stakeholders.