What is Validation and Verification Testing?
Which test is followed for Validation and for Verification?

this is also called IV&V(Independent Verification & Validation)

This is the role of tester.

Verification  techniques  :walkthrough,inspection,review

validation                     :Different types of testing like  

                                    functional,input,regression ..etc

Verification: Involves reviews and meeting to evaluate documents, plan, code, requirements, specifications. This can be done with check lists, issue lists, walk throughs, inspection meetings, reviews

Validation: Involved actual testing. This can be done after the verification is completed

Verificaion is process evaluating a component or system to determine whether the products of given development stage satisfying the conditions imposed at the start of the phase

Validation is Correctness of a component or system with respect to user requirements

in v-model right side verification left side validation

Validation is done accoeding to customer requirement.Its ;what actually a testing is.Dynamic testing.....................Verification is according to standards and guidelines.It's a process.Done Statically.

Hi,

verifcation:It is nothing but to test wheather the system is right r not

validationg:it is extention of validation that is system is right r not w.r.t to customer requirement r not

Verification Testing: It is the set of activities which ensures that the software correctly impliments a specific function.

Validation Testing: It is the different set of activities which ensures that the software that has been built is tracable to the client requirements.

Verification is mostly done by the developer, and all white box testing techniques can be used for verification testing.

Validation Testing is the responsibility of the tester, and all the tests done in block box testing will be treated as validation tests. 

Hi this is Susheel.

I want share some idea about the Verification And the Validation.

If u know the V model,In that model,which is comprises of the Veification & Validation model.In which there r some phases like

Requirment Review,Special review for Functional Design Specification,Design review,Code review all comes under the verification.

And the Unit Testing,integration testing,system testing.Acceptance testing comes under the Validation.

Verification is QA process,It is preventions of the defect.It is related to the Process.

Validation is QC proess,it is detection of the defect.it is related to the product.  

Verification:- These are the activities done before the code is developed.Nothing to be executed on computer.It is a static techniques and includesReviews ----- Informal checkingInspection ------Formal Checking Walkthrough ------Guided CheckingAudit -------Sampled checkingIt is a defect prevention bases.It is a construction techniques.Remember prevention is less costly than detection.If we prevent the defects in the early stages it takes less time and cost that detecting defects.All activities on the left side of V- Model are verification activities.It is also a QA process.Validation : - Real time testing of the finished product.It is a destruction activity .It is a dynamic technique and includesTesting and Prototyping.All activities on the right side of V model are Validation activities.This is done by the Tester as well as developers at Unit Level.Correct me if I am wrong.

Validation is nothing but whether we get right product or not.........Varification is nothing but whether we get the product right...........

this is venkat


verification is a process of checking inorder to check whether they are working according to the guidelines are not.in the verification they will give preference for process.


validation is a process of checking inorder to check whether they are working acoording toi the requirements are not.in the validation they give preference for the product.

 verification:- is internal application
                      Analysis ,design,coading ----this will comes under  white box testing ..

 Validatinn:- Is an External application
                    functional , system testing and monitering document --- this will comes
                    under Block Box testing ...

Verification : Are we building the product right?

The process of determining whether or not the given phase of the s/w developement fullfills the requirements established during the previous phase .

Example : Reviewing the archietecture doc to check if it meets the SRS .

Validation : Are we building the right product ?
Its the process of evaluating the s/w at the end of its developement to check if it meets the specified requirement.

Example : Testing the unit to check if it meets the low level design specification

Validation: The process of evaluating software at the end of the software development process to ensure compliance with software requirements. The techniques for validation is testing, inspection and reviewing.

Verification: The process of determining whether of not the products of a given phase of the software development cycle meet the implementation steps and can be traced to the incoming objectives established during the previous phase. The techniques for verification are testing, inspection and reviewing.

I don't have the reference right handy to give them credit, but the simplest way I've heard the difference between verification and validation described is this (may be paraphrased):

Verification is ensuring you built the product right

Validation is ensuring you built the right product

So in other words, Verification is checking to make sure what you built works the way you intended it to, while validation is checking to make sure what you built properly addresses the problem it was intended to solve (works the way the person it was built for intended it to.)

Verification : Have we built the software right (i.e., does it match the specification?)? It's process based.This includes Reviews , Walkthroughs and Inspection

Validation : Have we built the right software (i.e., is this what the customer wants?)? It's product based. This includes the actual testing with the executable code.

Verification is a quality process that is used to evaluate whether or not a product, service, or system complies with a regulation, or conditions imposed at the start of a development phase. Verification can be in development, scale-up, or production. This is often an internal process.

Validation is the process of establishing evidence that provides a high degree of assurance that a product, service, or system accomplishes its intended requirements. This often involves acceptance of fitness for purpose with end users and other product stakeholders.

VenenderReddy

in verification we just show that is our product is according to standard or not it is a dynamic process

Validation means to find the reliability & life time of the product

Verification means to check the product as per customer requirement.

Validation test:
1) Realability test
2) Endurance test

Verification test:
1) Visual checking as per product drawing
2) Material verfication as per product Drawing
3) Dimensional checking

Verification means checking whether the application is according to the customer requirement or not validation is entering the valid data and checking whether the application is according to the customer requirement or not

Verification means are we developing a right product or not and also validating does the developed product is right or not.

Verification means white box testing validation testing means black box testing.

Verification testing can be followed by development team and validation testing can be followed by testing team.

Verification:- Checking the status of the actual result whether it is same as expected result in every phase.

Validation:- Checking the status of the actual result whether it is same as expected result in the last phase.

Validation:are we building product right?
Verification: are we building right product? for example if there is a program with addition of two numbers then tester will validate that the program has multiplication or additional operator.In same way verify  the given values and get the expected output or not

Projects aim to deliver software to specification. For the project to deliver what the customer needs requires a correct specification. Additionally, the delivered system must meet the specification. This is known as validation (is this the right specification?) and verification (is the system correct to spec-ification?).

Verifiaction:-conducting reviews on documents like BRS,SRS,HLDS,LLDS......called as Verification Validation:-executeing the test cases and observing whether actual result is equal to expected result called as validation Documents(consists of project requirements and so on... )testing comes under verification Unit testing,Integration Testing,s/w testing,Acceptance Testing,release testing,test s/w changes these tests comes under validation

Validation:

Better known as testing and the process includes:

System testing
System Integration testing
Sub System Integration testing.
Unit testing.
Black box testing will be used in the validation testing.

Verification:

White box testing is used in this case
Sub system integration and the Unit testing belong to this category.