What is the Difference Between Verification and Validation?
🆚 Go to Comparative Table 🆚The main difference between verification and validation lies in their purposes and the stages of the software development process at which they are performed. Here are the key differences between the two:
- Purpose: Verification ensures that the software meets specific requirements and specifications, while validation checks whether the software meets the requirements and expectations of the user.
- Stage: Verification is typically performed during the development phase, while validation occurs after product development.
- Methods: Verification involves checking documents, design, codes, and programs using methods like reviews, walkthroughs, inspections, and desk-checking. Validation, on the other hand, involves testing and validating the actual product using methods like black box testing, white box testing, and non-functional testing.
- Code Execution: Verification does not involve executing the code, while validation involves executing the code.
- Responsibility: Verification is usually the responsibility of the development team, while validation is typically the responsibility of an independent testing group.
In summary, verification focuses on ensuring that the software is built according to the specified requirements, while validation ensures that the software meets the user's needs and expectations.
On this pageWhat is the Difference Between Verification and Validation? Comparative Table: Verification vs Validation
Comparative Table: Verification vs Validation
Here is a table highlighting the differences between verification and validation:
Feature | Verification | Validation |
---|---|---|
Process | Static testing, includes checking documents, design, codes, and programs | Dynamic testing, includes testing and validating the actual product |
Code Execution | Does not involve executing the code | Involves executing the code |
Methods | Reviews, walkthroughs, inspections, and desk-checking | Black box testing, white box testing, and non-functional testing |
Focus | Ensuring the software conforms to the specification | Ensuring the software meets the requirements and expectations of the end-user |
Timing | Verification begins after a valid and complete specification | Validation begins as soon as the project starts |
Error Prevention/Detection | Verification is for prevention of errors | Validation is for detection of errors |
In summary, verification ensures that the software is being built correctly, while validation ensures that the right product is being built.
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