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Home » Software Engineering » What is V-model ? Advantages and Disadvantages of V Model.
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What is V-model ? Advantages and Disadvantages of V Model.

By Dinesh Thakur

The V model is useful in every phase of the software development life cycle. This model determines the complex relationship between each phase of the software development and ensures that each phase of software development is associated with testing. Various functions performed by V model are listed below.

  1. It emphasizes that testing occurs in every phase of software development and does not occur only after the coding is completed.
  2. It determines the software development process within the organization.
  3. It determines the activities and the results to be produced in the software development.
  4. It describes the products to be created during the software project.

The V model is divided into two branches: left and right. The left branch analyzes and determines the requirements of the software to be developed. The right branch, on the other hand, includes the testing activities. The left and right branches of this model work concurrently. This implies that a relationship is established between both the branches.

The interrelationship between the branches of V model can be determined by the following points.

  1. Unit testing verifies the technical design. It individually tests units to verify that they (units) are functioning according to the requirements.
  2. The integration and system testing verifies the functional design of the program, to ensure that the functional design is implemented correctly.

                     V Model Diagram

  1. The requirements of the business are validated at the user end with the help of acceptance testing. Acceptance testing is used when the final software is developed. It verifies that the software has been developed according to the user’s requirements.
  2. Last of all, the production verification is carried out.

One of the key aspects of the V model is that verification and validation are performed simultaneously in both the branches. It is essential to link the left branch with the right branch as the left side of V model is executed to correct problems, which are encountered during verification and validation (the right side).

Various advantages and disadvantages associated with the V model are listed in Table

                          Table Advantages and Disadvantages of V Model

Advantages

Disadvantages

  1. Covers all functional areas.
  2. Contains instructions and recommendations, which provide a detailed explanation of problems involved.
  3. Emphasizes the significance of testing and ensures that testing is planned.
  1. The processes are institutionalized during the project and when the project is finished, they are abolished.

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About Dinesh Thakur
Dinesh ThakurDinesh Thakur holds an B.C.A, MCDBA, MCSD certifications. Dinesh authors the hugely popular Computer Notes blog. Where he writes how-to guides around Computer fundamental , computer software, Computer programming, and web apps.

Dinesh Thakur is a Freelance Writer who helps different clients from all over the globe. Dinesh has written over 500+ blogs, 30+ eBooks, and 10000+ Posts for all types of clients.


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