Cost of validating software
Examples of artifact validation: It would imply to verify if the specifications are met by running the software but this is not possible (e. Only by reviewing its associated artifacts, someone can conclude if the specifications are met.
g., how can anyone know if the architecture/design/etc. The output of each software development process stage can also be subject to verification when checked against its input specification (see the definition by CMMI below).
This may happen because when a product or application is build as per the specification but these specifications are not up to the mark hence they fail to address the user requirements.
Validation is basically done by the testers during the testing. Incidents can also be of type ‘Question’ where the functionality is not clear to the tester.
By themselves, verification and validation do not guarantee software quality; planning, traceability, configuration management and other aspects of software engineering are required.There are two ways to perform software validation: internal and external.During internal software validation it is assumed that the goals of the stakeholders were correctly understood and that they were expressed in the requirement artifacts precise and comprehensively.Software validation ensures that "you built the right thing" and confirms that the product, as provided, fulfills the intended use and goals of the stakeholders.This article has used the strict or narrow definition of verification.Examples of artifact verification: Validation during the software development process can be seen as a form of User Requirements Specification validation; and, that at the end of the development process is equivalent to Internal and/or External Software validation.Verification, from CMMI's point of view, is evidently of the artifact kind.In other words, software verification ensures that the output of each phase of the software development process effectively carry out what its corresponding input artifact specifies (requirement - software product), while software validation ensures that the software product meets the needs of all the stakeholders (therefore, the requirement specification was correctly and accurately expressed in the first place).Software verification ensures that "you built it right" and confirms that the product, as provided, fulfills the plans of the developers.According to the Capability Maturity Model (CMM) we can also define validation as The process of evaluating software during or at the end of the development process to determine whether it satisfies specified requirements. A product can pass while verification, as it is done on the paper and no running or functional application is required.But, when same points which were verified on the paper is actually developed then the running application or product can fail while validation.