software engineering Verification and Validation (V&V) ?

 Verification and Validation (V&V) ?



Verification
Validation
Are We Building a System?
Are We Making the Right System?
Verification is the process of evaluating the development phase products to find out whether or not to meet the specified requirements.
Validation is the process of evaluating software at the end of the development process to determine whether software meets the customer expectations and requirements.
The purpose of the test is to ensure that the product is developed according to the requirements and design specifications.
The purpose of the belief is that the product actually meets the needs of the user and check whether the features are correct in the first place.
The following activities include in verification: reviews, meetings and observations.
Validations include the following activities: test like black box test, white box test, grey box test etc.
Verification is carried out by the QA team to check whether the quality software is in accordance with the documentation.
Validation is carried out by testing team.
Execution of code is not comes under Verification.
Execution of code is comes under Validation.
The verification process specifies whether the output is according to inputs.
The validation process describes whether the software is accepted by the user or not.
Verification is carried out before the Validation.
Validation activity is carried out just after the Verification.
The following things are evaluated during testing: plans, requirement specifications, design specifications, codes, test cases etc.
During validation the following items are evaluated: under real-life testing or software.
Cost of errors caught in Verification is less than errors found in Validation.
Cost of errors caught in Validation is more than errors found in Verification.
It is actually a manual check of files like documents and requirements.
It is basically checking out the programs developed based on the requirement specification documents and files.

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