What Is The Difference Between `verification` And `validation`?


7 Answers

Anonymous Profile
Anonymous answered
In simple words, Verification is quality control in which we only take corrective actions and Verification is quality assurance which involves preventive actions. Software companies combine both verification and validation in their software quality assurance departments to produce high quality software.
Software Quality Assurance is an essential part of Software Development Life Cycle and Software Testing comes under Software Quality Assurance. Validation and Verification are part of Software Quality Assurance and Software Testing.
To understand the basic concept of Verification and Validation, let's discuss them separately.
Verification is a process of ensuring that every product is designed according to the user requirements. Reviews and meetings are conducted to evaluate different documents. These include requirements, specifications, plans and code. Evaluation of all these documents is done via checklists, walkthroughs and inspections. After completion of verification we move one step further and start validation.
Validation involves the actual testing where we check the program design to see if it is according to the intended design. Validation is performed both by software developers and software testers. Unit testing comes under validation and it is performed by Software developers in order to check that their code is working correctly. Alpha and beta testing also comes under validation.
sweetboy surendar Profile
Verification is derived from verify and validation is from validate.

According to, the definition of Verify is:

1. To prove the truth of by presentation of evidence or testimony;
substantiate. 2. To determine or test the truth or accuracy of, as by
comparison, investigation, or reference: Experiments that verified the
hypothesis. See synonyms at confirm. 3. Law. 1. To affirm formally or
under oath. 2. To append a verification to (a pleading); conclude with
a verification.
Anonymous Profile
Anonymous answered
Verification is check the everything documents of process
validation is check the date and time
Anonymous Profile
Anonymous answered
I don't know I think validation is date and time the other is everything documents of process
Stephane Rieberee Profile
Validation and verification are very similar, depending on their use. Infact, they are often listed as synonyms for one another.

Hope this helps!

Verification is:
1. The act of verifying.  
2. The state of being verified.  
3. Evidence that establishes or confirms the accuracy or truth of something: We could find no verification for his fantastic claims.  
4. A formal assertion of the truth of something, as by oath or affidavit.  
5. The process of research, examination, etc., required to prove or establish authenticity or validity.  
6. Law. A short confirmatory affidavit at the end of a pleading or petition.

Validation is:
1. To make valid; substantiate; confirm: Time validated our suspicions.  
2. To give legal force to; legalize.  
3. To give official sanction, confirmation, or approval to, as elected officials, election procedures, documents, etc.: To validate a passport.

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Suranjan Y Profile
Suranjan Y answered
Verification typically involves reviews and meetings. To ensure documents, plans.
But after verification only validation takes place. Validation is nothing but actual testing.
thanked the writer.
Anonymous commented
Validation is true while verfication is the correctness of the product which is to be designed according to the user's requirement.validation can also require or involve the actualting where we check the program design to see if it is according to the intended design of the user. Validation can also be the procedures for verfying the accuracy and validity of credit card numbers.validation can also be performed both by software developer s and software testers. Validation comes under unit testing.
Anonymous Profile
Anonymous answered
An equal number of moles of KI and MGF2 are dissolved in equal volumes of water, which solution has the higher boiling point vapor pressure and freezing point?

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