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Table of contents
1.
Introduction
2.
What is Verification?
3.
What is Validation?
4.
Difference Between Verification and Validation in Software Testing
5.
Validation and Verification Examples
6.
Frequently Asked Questions
6.1.
What is the difference between verification and validation with examples?
6.2.
List some activities involved in the validation.
6.3.
What are the checks required to test in the requirement validation process?
6.4.
What is the difference between verification and validation in API?
7.
Conclusion
Last Updated: Jun 10, 2024
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Difference Between Verification and Validation

Author Rahul Singh
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Ashwin Goyal
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Introduction

Have you ever used any software on mobile or your PC? The answer must be yes for almost everyone. But have you ever thought about the process of making software? If not, then you are at the right place.

Difference between Verification and Validation

This blog will discuss the difference between verification and validation. These are the two methods which make software testing successful. Let's dive deep into the topics for better understanding.

What is Verification?

In software testing, verification refers to the process of checking a system during or after development to see if it satisfies the stated criteria. Verification focuses on the software's accuracy with regard to the needs. We use verification to find the error in the initial stage.

Verification is a type of static testing. It includes three methods that are as follows.

  • Walkthrough
  • Inspection
  • Review
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What is Validation?

In software testing, Validation is the process of reviewing the software on certain parameters to check if it is up to the mark, as per user needs. Validation is performed at many stages. For example SDLC testing phase, maintenance stage, etc. We also use Validation to check the correct way of a process. The product team does the process of Validation.

Validation is a type of dynamic testing. It includes two methods which are as follows.

  • Testing
  • End Users

Difference Between Verification and Validation in Software Testing

We are done with both verification and validation. It's time to check the difference between verification and validation in a tabular form. Let's have a look.

Verification

Validation

Verification is the static process of analyzing documents, visual designs, computer programs, and codes.Validation is the dynamic process of checking the correct is being built for the user.
It is done by the testers.It is done by the product team.
The execution of codes is not included in the verification.The execution of codes is included in the validation.
Verification is done before the validation.Validation is done after the verification.
Verification checks "Are we building the product right"?Validation checks "Are we building the right product"?
Verification targets internal aspects such as design.Validation targets the end product that is ready to be deployed.
It is used to prevent errors.It is used to detect errors.
Verification testing includes Quality Assurance.Validation testing includes Quality Control.

Validation and Verification Examples

Verification ensures that the product is built correctly based on specified requirements. Suppose a requirement states that a user registration form should include fields for "username" and "email address." Verification in this context would involve reviewing the code and design to confirm that these fields are correctly implemented according to the requirement. A code review or automated unit test that checks if these fields are present and correctly formatted would be part of the verification process.

On the other hand, validation confirms that the product meets the user's needs and works correctly in real-world scenarios. After the registration feature is implemented, validation would involve actual users testing the registration process. They would try creating user accounts and entering usernames, and email addresses to ensure that the system functions as expected in a real-world scenario. Any issues or unexpected behaviors encountered during this user testing will be addressed through validation.

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Frequently Asked Questions

What is the difference between verification and validation with examples?

Verification confirms the correct construction of a product based on specified requirements through activities like code reviews. While validation tests if the product meets customer needs (e.g., patient testing in medical device development). Both ensure quality and compliance.

List some activities involved in the validation.

Validation includes essential activities to ensure a product meets its goals. The UAT involves end-users testing for requirements alignment. Then System Testing evaluates overall functionality, while Performance Testing assesses speed and scalability. Then Regression Testing ensures existing features aren't affected by changes.

What are the checks required to test in the requirement validation process?

In requirement validation, key checks include ensuring completeness, consistency, and clarity of requirements. Requirements should be testable with clear success/failure criteria, aligned with project goals (relevance), and feasible within constraints. Traceability ensures requirements are tracked, and priority levels guide testing and development efforts.

What is the difference between verification and validation in API?

Verification in API ensures that the API meets specified requirements and is correctly implemented. It focuses on checking code and functionality against design documents. Validation ensures the API fulfills its intended purpose and meets user needs, focusing on actual performance and real-world usage scenarios.

Conclusion

This article discusses the difference between Verification and Validation in detail. We have seen the definition, types, and a comparison table on the difference between Verification and Validation.

We hope this blog has helped you enhance your knowledge of the difference between Verification and Validation. If you want to learn more, then check out our articles.

Happy Learning!

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