The V software development model-model of the systems engineering process. The V-model is a graphical representation of a systems development lifecycle. It is used to produce rigorous development lifecycle models and project management models.
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The V-model falls into three broad categories, the German V-Modell, a general testing model and the US government standard. The V-model summarizes the main steps to be taken in conjunction with the corresponding deliverables within computerized system validation framework, or project life cycle development. It describes the activities to be performed and the results that have to be produced during product development. The left side of the “V” represents the decomposition of requirements, and creation of system specifications. The right side of the “V” represents integration of parts and their validation. Validation can be expressed by the query “Are you building the right thing?
There are three general types of V-model. The German V-Model “V-Modell”, the official project management methodology of the German government. It is roughly equivalent to PRINCE2, but more directly relevant to software development. Throughout the testing community worldwide, the V-model is widely seen as a vaguer illustrative depiction of the software development process as described in the International Software Testing Qualifications Board Foundation Syllabus for software testers. The US also has a government standard V-model which dates back about 20 years like its German counterpart. Its scope is a narrower systems development lifecycle model, but far more detailed and more rigorous than most UK practitioners and testers would understand by the V-model. It is sometimes said that validation can be expressed by the query “Are you building the right thing?
In practice, the usage of these terms varies. The assurance that a product, service, or system meets the needs of the customer and other identified stakeholders. It often involves acceptance and suitability with external customers. The evaluation of whether or not a product, service, or system complies with a regulation, requirement, specification, or imposed condition. It is often an internal process.
The V-model provides guidance for the planning and realization of projects. Minimization of project risks: The V-model improves project transparency and project control by specifying standardized approaches and describing the corresponding results and responsible roles. It permits an early recognition of planning deviations and risks and improves process management, thus reducing the project risk. Improvement and guarantee of quality: As a standardized process model, the V-Model ensures that the results to be provided are complete and have the desired quality. Defined interim results can be checked at an early stage.