Verifying and validating the solutions 100 dating new online service
It is normally the responsibility of software testers as part of the software development lifecycle.
In simple terms, software verification is: "Assuming we should build X, does our software achieve its goals without any bugs or gaps?
External validation happens when it is performed by asking the stakeholders if the software meets their needs.
Different software development methodologies call for different levels of user and stakeholder involvement and feedback; so, external validation can be a discrete or a continuous event.
This is a form of "artifact or specification validation".
Building the product right implies the use of the Requirements Specification as input for the next phase of the development process, the design process, the output of which is the Design Specification.
And still, in reality, the activities of validation and verification are often done together.
We might hold a requirements review and in the process discover ambiguous requirements (verification) and unneeded ones (validation).
It may also be referred to as software quality control.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.If the software meets the requirement specification, it has been internally validated.Successful final external validation occurs when all the stakeholders accept the software product and express that it satisfies their needs.Such final external validation requires the use of an acceptance test which is a dynamic test.
This paper will review the evolution of validation techniques and their current status in Requirements Engineering (RE).