Describe the difference between verification and validation. Do both make use of test-case design methods and testing strategies?
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Verification and validation are two distinct processes in the field of quality management, particularly in software development.
Verification refers to the process of checking that a product, system, or component meets specified requirements. It is the process of evaluating a system or component during or at the end of the development process to determine whether it satisfies the specified requirements. It answers the question, "Are we building the product right?" This means the product is developed according to the required specifications and methodologies. Verification methods include reviews, walkthroughs, and inspections.
Validation, on the other hand, is the process of evaluating a system or component during or at the end of the development process to determine whether it satisfies the user's needs or requirements. It answers the question, "Are we building the right product?" This means the product provides the correct functionality to meet the user's needs. Validation methods include testing like black box testing, white box testing, and non-functional testing.
Both verification and validation make use of test-case design methods and testing strategies. In verification, these methods and strategies are used to ensure that the product is being developed correctly according to the specified requirements. In validation, these methods and strategies are used to ensure that the product meets the user's needs and expectations.
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