{"id":22855,"date":"2020-02-05T03:01:08","date_gmt":"2020-02-05T03:01:08","guid":{"rendered":"https:\/\/www.testingdocs.com\/questions\/?p=22855"},"modified":"2024-08-09T06:28:00","modified_gmt":"2024-08-09T06:28:00","slug":"what-is-the-difference-between-verification-and-validation","status":"publish","type":"post","link":"https:\/\/www.testingdocs.com\/questions\/what-is-the-difference-between-verification-and-validation\/","title":{"rendered":"What is the difference between Verification and Validation?"},"content":{"rendered":"

What is the difference between Verification and Validation?<\/h2>\n

This tutorial will outline the differences between Verification and Validation. Let’s first understand the terms.<\/p>\n

What is verification?<\/h2>\n

Verification ensures the product is designed to deliver all functionality to the customer; it typically involves reviews and meetings to evaluate documents, plans, code, requirements, and specifications; this can be done with checklists, issues lists, walkthroughs, and inspection meetings.<\/p>\n

What is validation?<\/h2>\n

Validation ensures that functionality, as defined in requirements, is the intended behavior of the product; validation typically involves actual testing and takes place after verifications are completed.<\/p>\n

Verification vs Validation<\/h2>\n

Some of the differences are as follows:<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Verification<\/td>\nValidation<\/td>\n<\/tr>\n
Verification is a static testing procedure.<\/td>\nValidation is a dynamic testing procedure.<\/td>\n<\/tr>\n
It involves verifying the requirements, detailed design documents, test plans, walkthroughs, and inspections of various documents produced
\nduring the development and testing process.<\/td>\n		Validation involves actual testing of the product as per the test
\nplan (unit test, integration test, system test, acceptance test, etc).<\/td>\n<\/tr>\n
It is a preventive procedure.<\/td>\nIt is a corrective procedure.<\/td>\n<\/tr>\n
Are we building the product RIGHT?<\/td>\nAre we building the RIGHT product?<\/td>\n<\/tr>\n
It involves more than two to three persons and is a group activity<\/td>\nIt involves the testers and sometimes users.<\/td>\n<\/tr>\n
It is also called Human testing since it involves finding the errors by persons participating in a review or walk-through.<\/td>\nIt is also called Computer testing since errors are found by testing the software on a computer.<\/td>\n<\/tr>\n
Verification occurs on Requirements, Design, and code.<\/td>\nValidation occurs only on code and the executable application.<\/td>\n<\/tr>\n
Verification finds errors early in the requirement & design phase. The cost of errors is less.<\/td>\nValidation finds errors only during the testing stage; hence, the cost of errors is higher.<\/td>\n<\/tr>\n
An effective tool for verification tool is a Checklist.<\/td>\nVarious manual and automated test tools are available for Validation.<\/td>\n<\/tr>\n
It requires cooperation and scheduling of meetings and discussions.<\/td>\nIt is to check that the product satisfies the requirements and is accepted by the user.<\/td>\n<\/tr>\n
Verification tasks include:
\nPlanning
\nExecutionVerification activities include:<\/p>\n
    \n
  • Requirements Verification<\/li>\n
  • Functional design verification<\/li>\n
  • Internal Design Verification<\/li>\n
  • Code Verification<\/li>\n<\/ul>\n<\/td>\n
Validation tasks include:
\nPlanning
\nTestware Development
\nTest Execution
\nTestware MaintenanceValidation activities include:<\/p>\n
    \n
  • Unit testing<\/li>\n
  • Usability testing<\/li>\n
  • Function testing<\/li>\n
  • System testing<\/li>\n
  • Acceptance testing<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n
Verification deliverables (work products) are:<\/p>\n
    \n
  • Verification test plan<\/li>\n
  • Inspection report<\/li>\n
  • Verification test report<\/li>\n<\/ul>\n<\/td>\n
Validation deliverables are:<\/p>\n
    \n
  • Test plan<\/li>\n
  • Test Design Specification<\/li>\n
  • Test Case Specification<\/li>\n
  • Test Procedure Specification<\/li>\n
  • Test log<\/li>\n
  • Test incident report<\/li>\n<\/ul>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

    What is the difference between Verification and Validation? This tutorial will outline the differences between Verification and Validation. Let’s first understand the terms. What is verification? Verification ensures the product is designed to deliver all functionality to the customer; it typically involves reviews and meetings to evaluate documents, plans, code, requirements, and specifications; this can […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[50],"tags":[],"class_list":["post-22855","post","type-post","status-publish","format-standard","hentry","category-testing-questions","has-post-title","has-post-date","has-post-category","has-post-tag","has-post-comment","has-post-author",""],"_links":{"self":[{"href":"https:\/\/www.testingdocs.com\/questions\/wp-json\/wp\/v2\/posts\/22855","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.testingdocs.com\/questions\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.testingdocs.com\/questions\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.testingdocs.com\/questions\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.testingdocs.com\/questions\/wp-json\/wp\/v2\/comments?post=22855"}],"version-history":[{"count":8,"href":"https:\/\/www.testingdocs.com\/questions\/wp-json\/wp\/v2\/posts\/22855\/revisions"}],"predecessor-version":[{"id":23672,"href":"https:\/\/www.testingdocs.com\/questions\/wp-json\/wp\/v2\/posts\/22855\/revisions\/23672"}],"wp:attachment":[{"href":"https:\/\/www.testingdocs.com\/questions\/wp-json\/wp\/v2\/media?parent=22855"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.testingdocs.com\/questions\/wp-json\/wp\/v2\/categories?post=22855"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.testingdocs.com\/questions\/wp-json\/wp\/v2\/tags?post=22855"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}