Verification vs Validation
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Grey Box Testing is a software testing technique that combines aspects of both Black Box and White Box testing. The tester has partial knowledge of the internal workings of the application, allowing for more targeted and effective test cases.
Verification vs Validation
Verification and Validation are two key components of software testing used to ensure product quality.
Verification refers to the process of checking whether the software meets the specified requirements and design specifications. It answers the question: “Are we building the product right?” Verification is a static process involving reviews, walkthroughs, and inspections. It is done without executing the code. Examples include requirement reviews, design document analysis, and code reviews.
Validation, on the other hand, is the process of evaluating the final product to ensure it meets the business needs and expectations. It answers: “Are we building the right product?” Validation is a dynamic process that involves actual testing like functional, integration, system, and user acceptance testing (UAT).
Key Differences:
Timing: Verification happens during development; Validation happens after.
Process Type: Verification is static; Validation is dynamic.
Focus: Verification ensures specifications are followed; Validation ensures the product is useful and correct.
Performed by: Developers, QA engineers, analysts; Validation involves end-users too.
Conclusion:
Both processes are crucial. Verification helps catch errors early in development, while Validation ensures the final product performs as intended. Together, they ensure the software is both correct and fit for purpose.
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