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Differentiate between verification and validation.
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written 5.8 years ago by
teamques10
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| Verification | Validation |
|---|---|
| Are we building the system right? | Are we building the right system? |
| Verification is the process of evaluating products of a development phase to find out whether they 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 objective of Verification is to make sure that the product being develop is as per the requirements and design specifications. | The objective of Validation is to make sure that the product actually meet up the user‘s requirements, and check whether the specifications were correct in the first place. |
| Following activities are involved in Verification: Reviews, Meetings and Inspections | Following activities are involved in Validation: Testing like black box testing, white box testing, gray box testing etc. |
| Verification is carried out by QA team to check whether implementation software is as per specification document or not | Validation is carried out by testing team. |
| Execution of code comes under Verification | Verification. Execution of code does not comes under Validation. |
| Verification process explains whether the outputs are according to inputs or not. | 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. |
| Following items are evaluated during Verification: Plans, Requirement Specifications, Design Specifications, Code, Test Cases etc | Following item is evaluated during Validation: Actual product or Software under test. |
| 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 |
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