|
In software project management, software testing, and software engineering, verification and validation (V&V) is the process of checking that a software system meets specifications and that it fulfills its intended purpose. It may also be referred to as software quality control. It is normally the responsibility of software testers as part of the software development lifecycle. ==Definitions== Validation checks that the product design satisfies or fits the intended use (high-level checking), i.e., the software meets the user requirements. This is done through dynamic testing and other forms of review. Verification and validation are not the same thing, although they are often confused. Boehm succinctly expressed the difference between * Verification: Are we building the product right? * Validation: Are we building the right product? According to the Capability Maturity Model (CMMI-SW v1.1), * Software Verification: The process of evaluating software to determine whether the products of a given development phase satisfy the conditions imposed at the start of that phase. () * Software Validation: The process of evaluating software during or at the end of the development process to determine whether it satisfies specified requirements. () In other words, software verification is ensuring that the product has been built according to the requirements and design specifications, while software validation ensures that the product actually meets the user's needs, and that the specifications were correct in the first place. Software verification ensures that "you built it right". Software validation ensures that "you built the right thing". Software validation confirms that the product, as provided, will fulfill its intended use. From testing perspective: *Fault – wrong or missing function in the code. *Failure – the manifestation of a fault during execution. *Malfunction – according to its specification the system does not meet its specified functionality. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Software verification and validation」の詳細全文を読む スポンサード リンク
|