All IT Courses 50% Off
QA Tutorials

V-MODEL

V-Model is also called as verification model and validation model. In this process, each phase of SDLC starts. It has sequential design process same as waterfall model.

What is Verification?

Verification consists of a static analysis method done without running the code. It is a product development code process to find whether specified requirements meet.

What is Validation?

Validation involves a dynamic analysis method which is functional and non-functional, testing is done to process to divide the software after the completion of the development process to determine whether the software meets the requirements and customer expectations.

V-model contains verification phases on one side of the validation phases on the other side. Here the verification and validation both processes are joined by the coding phase in v-shape. Thus it is called as V-Model.

There are different phases of verification in the V-model:

  1. Business requirement analysis: This is the first step where product requirements are gathered from the customer’s side. This phase contains detailed communication to know customer expectations and exact requirements.
  1. System Design: In this stage, system engineers analyse and explain the business of the proposed system by studying the user requirements document.
  1. Architecture Design: The baseline in choosing the architecture is that it should consist a list of modules, brief functionality of each module, their interface relationships, dependencies, database tables, architecture diagrams and technology detail. The integration testing model is carried out in a particular phase.
  1. Module Design: In the module design phase, the system breaks down into small modules. The detailed design of the modules is specified which is understood as Low-level design.
  1. Coding step– Once the design phase is completed the coding phase starts Depending on the requirements, a suitable programming language is decided. We have some guidelines and standards for coding. Before we check in the repository, the final build is optimised for better performance, and the code goes through many code reviews to check the performance.

When we use V-Model?

  • When the requirement is well defined and unambiguous.
  • V-shaped model should be used for small to medium-sized projects where requirements are clearly defined and fixed.
  • V-shaped model should choose when sample technical resources are available with essential technical expertise.

Advantages:

  1. It is very easy to understand.
  2. Testing Methods like planning, test designing happens before coding.
  3. It saves a lot of time. So a higher chance of success over the waterfall model.
  4. It avoids the downward flow of the defects.
  5. Works good for small plans where requirements are easily understood.

Disadvantages:

  1. It is rigid and least flexible.
  2. Not suitable for a complex project.
  3. No early prototypes of the software are produced as software is developed during the implementation stage
  4. If changes happen in the midway, then the test documents with the required changes have to be updated.
Traditional Single V Model of System Engineering Activities

The V model is a simple variant of the traditional waterfall model of software development.  By the diagram, we can understand V model builds on the waterfall model by highlighting verification and validation. The V model takes the rock bottom half of the waterfall model and bends it upward into the shape of a V, in order that the activities on the proper verify or validate the work products of the activity on the left. Specifically, the left side of the V represents the analysis activities that split the users needs into small, manageable pieces, while the right side of the V shows the corresponding synthesis activities that aggregate these pieces into a system that meets the user’s needs.

Facebook Comments

9 Comments

  1. V-MODEL:
    V-Model is also called as verification model and validation model. In this process, each phase of SDLC starts. It has sequential design process same as waterfall model.
    Verification:
    Verification consists of a static analysis method done without running the code. It is a product development code process to find whether specified requirements meet.

    Validation:
    Validation involves a dynamic analysis method which is functional and non-functional, testing is done to process to divide the software after the completion of the development process to determine whether the software meets the requirements and customer expectations.

    V-model contains verification phases on one side of the validation phases on the other side.
    There are different phases of verification in the V-model:
    1. Business requirement analysis
    2. System Design
    3. Architecture Design
    4. Module Design
    5. Coding step

    When we use V-Model?
    1. When the requirement is well defined and unambiguous.
    2. V-shaped model should be used for small to medium-sized projects where requirements are clearly defined and fixed.
    3. V-shaped model should choose when sample technical resources are available with essential technical expertise.

    Advantages:
    1. It is very easy to understand.
    2. Testing Methods like planning, test designing happens before coding.
    3. It saves a lot of time. So a higher chance of success over the waterfall model.
    4. It avoids the downward flow of the defects.
    5. Works good for small plans where requirements are easily understood.

    Disadvantages:
    1. It is rigid and least flexible.
    2. Not suitable for a complex project.
    3. No early prototypes of the software are produced as software is developed during the implementation stage
    4. If changes happen in the midway, then the test documents with the required changes have to be updated.

  2. V- Model is a sequential design process since it consists of verification & validation process joined by coding V Shape that why it is called V-Model.
    Verification is a static analysis method ( without running the code) whereas Validation is a dynamic analysis in which testing is done to determine whether the software complies with customer expectation.
    V-Model consist of different phases of verification such as.
    1 Business requirement analysis:
    2 System Design
    3 Architecture Design
    4 Module Design
    5 Coding step.

    Use of V_ Model
    V-Model is generally used for small to medium size project where requirement are clearly defined & unchangeable In future.

    Advantage of V Model
    Main advantage of V-Model is that it requires testing at every step. so it restricts the flow of errors & consequently higher chances of success.

    Disadvantage
    Since the model is not very flexible in terms of the future changes in requirement, so its not suitable for complex projects, besides prototypes can not be produced for this model.

  3. V_MODEL:
    V-Model is also called as verification model and validation model. In this process, each phase of SDLC starts. It has sequential design process same as waterfall model.
    Verification:
    Verification consists of a static analysis method done without running the code. It is a product development code process to find
    whether specified requirements meet.
    Validation:
    Validation involves a dynamic analysis method which is functional and non-functional, testing is done to process to divide the
    software after the completion of the development process to determine whether the software meets the requirements and
    customer expectations.
    V-model contains verification phases on one side of the validation phases on the other side.
    There are different phases of verification in the V-model:
    1. Business requirement analysis
    2. System Design
    3. Architecture Design
    4. Module Design
    5. Coding step
    When we use V-Model?
    1. When the requirement is well defined and unambiguous.
    2. V-shaped model should be used for small to medium-sized projects where requirements are clearly defined and fixed.
    3. V-shaped model should choose when sample technical resources are available with essential technical expertise.

    Advantages:
    1. It is very easy to understand.
    2. Testing Methods like planning, test designing happens before coding.
    3. It saves a lot of time. So a higher chance of success over the waterfall model.
    4. It avoids the downward flow of the defects.
    5. Works good for small plans where requirements are easily understood.

    Disadvantages:
    1. It is rigid and least flexible.
    2. Not suitable for a complex project.
    3. No early prototypes of the software are produced as software is developed during the implementation stage
    4. If changes happen in the midway, then the test documents with the required changes have to be updated.

  4. V-Model is (verification and validation model combined).

    Verification consists of a static testing

    Validation involves a dynamic testing

    The verification and validation processes are joined by the coding phase in v-shape.

    There are different phases of verification in the V-model:

    Business requirement gathering, System Design, Architecture Design, Module Design, Coding

    V-Model is used when the requirement is well defined and unambiguous.

    Advantages:

    Used for small to medium-sized projects.
    Testing Methods like planning, test designing happens before coding.
    It saves time and avoids the downward flow of the defects.

    Disadvantages:
    Not very flexible and not suitable for a complex project.
    any client requirement changes impact the test documents as the required changes have to be updated.

  5. V Model is also called as verification and validation model. In this process each phase of SDLC starts. I t has sequential design process same as water flow model
    Verification consists of a static analysis method , without running the code
    Validation consists of dynamic analysis method which is functional and non-functional
    There are different phases of verification in v model
    Business requirement analysis, System design, Architecture design, module design, coding.

  6. V-model (Verification and Validation model)
    -V-model is a type of SDLC model where process executes in sequential manner.
    -Verification and validation happens simultaneously and are joined by coding phase in V-shape.
    – In this model every development phase is associated with corresponding testing phase.

    Verification is static analysis or static testing done without executing the code.
    Validation is dynamic analysis model or it is Functional and non-functional testing done by executing the code.

    Different phases of V-model are
    -Requirement gathering -System design-Architectural design-Module Design and coding

    -V-model is suitable for small scale projects where the requirements are clear and unambiguous.
    -It is easy to understand.
    -V-model is not viable for medium and large sized projects ,as this model cannot accommodate changing requirements.
    It is rigid and not flexible.

  7. V Model – Validation or Verification Model has sequential design process same as waterfall model .
    Verification – static analysis
    Validation – dynamic analysis
    The stages of V model :
    1. Business Requirement Analysis : product requirement is gathered
    2. System Design : system engineers analyze and explain business of the proposed system
    3. Architecture Design : integration testing model is carried out here
    4. Module Design : the system breaks down into smaller modules and details design of the modules is specified
    5. Coding Step : suitable coding language is decided according the requirments and is reviewed various times
    V model is used when : requirements are clear and unambiguous 2. small or medium sized projects 3. when sample technical resources are available with essential technical expertise

    Advantages : Easy to understand, saves time, avoids downward flow of defects, works good for small plans .

    Disadvantages : very rigid, not suitable for complex project, no prototypes are developed in earlier stages, all test documents need to be updated in case of any changes

  8. V-model is also called as Verification and Validation Model.
    Phases in V-Model.
    When we go for V-Model?
    Advantages of V-Model.
    Disadvantages of V-Model.

  9. V-model: v model is also called as verification model and validation model, it has sequential design process as waterfall model.
    verification consists of a static analysis method.
    validation consists of a dynamic analysis method.
    v model contains verification phases on one side and validation phase on other side, they both process are joined by the coding phase in v shape, that’s why we call v-model.
    different verifications in V-model:
    business requirement analysis and system design, architecture design, module design, coding step.
    we use V-model when the requirement is well defined and unambiguous and small to medium projects, sample technical resources are available with essential technical exprtise.
    advantages: it is easy to understand
    planning and designing happens before coding
    it saves lot of time
    works good for small plans where requirements are easily understood
    Disadvantages: it is rigid and least flexible
    not suitable for complex projects.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Related Articles

Back to top button
Close
Close