V- Model

Explain the process of V-Model?

Main theme of V-Model is Verification and Validation.
Verification represents “Are we building the product RIGHT?" i.e. Verification is a process to verify the software product or application is developed the right way.

Validation is a process of finding out if the product being built is right? i.e. whatever the software product is being developed, it should do what the user expects it to do.
All types of testing methods are basically carried out during the Validation process. Test plan, test suits and test cases are developed, which are used during the various phases of Validation process.

Requirement & Gap Analysis:

- Business analyst (BA)gathers the requirements from Client and prepares Business Requirement Document (BRD)
- User Acceptance Testers (UAT) go through the same BRD and Prepares UAT test case design/Checklist & UAT test plan document

System Design & Planning:

- SA review and go through the BRD and prepares SRS document
- System testers review and go through the SRS and prepare System test case
design & test plan documents

Architect & Module Design:

- Senior developers review and go through the SRS and prepares the HLD & LLDs
- Development team review and go through the HLD and LLDs then prepare the integration & Unit Test case design and test plan documents

Coding:
Once the Coding is done same programming team would validate the developed system code by performing the Unit, Integration testing based Unit & Integration test case design and plan.

System Testing: Testers validate the developed system by executing the design test cases against the application as per test plan
UAT testing: After System testing, UAT testers validate the developed application based UAT test case design & test plan.

V-Model Advantages:

1. An important aspect of this model is that testing activities like planning, test designing
happens well before coding
2. Its more flexible compare to Waterfall model

V-Model disadvantages:

1. It needs lot of resources and money.
2. it needs an established process to implement
3. It can be implemented by only some big companies