4.1.6.1. V-Model

The V-Model is a software development methodology where each stage of development is paired with a corresponding testing phase. It’s represented as a “V” shape, symbolizing how development and testing phases are connected.

4.1.6.1.1. Contents:

4.1.6.1.2. Verification (Left Side of the V)

The left side of the “V” represents the verification stages, where different design aspects are specified.

  • Requirements Analysis: Collecting the customer requirements and determining the project needs.

  • System Design: Defining the structure and framework of the software.

  • Architectural Design: Planning the detailed components and their interactions.

  • Module Design: Focusing on the design of the individual parts (modules) of the system.

4.1.6.1.3. Validation (Right Side of the V)

The right side of the “V” represents the validation stages, where different testing phases ensure the software functions as expected.

  • Unit Testing: Testing the smallest parts (modules) of the software individually.

  • Integration Testing: Checking if the modules interact and work well together.

  • System Testing: Testing the complete system to verify full functionality.

  • User Acceptance Testing (UAT): Ensuring the software meets user needs and is ready for release.

4.1.6.1.4. Coding (Middle of the V)

In the middle of the V-Model is the coding phase, where code is developed according to design specifications and reviewed for issues.

4.1.6.1.5. Pros of the V-Model

  • Early Problem Detection: Testing is integrated throughout the development process.

  • Structured and Organized: Easy to follow and keeps development on track.

  • Ideal for Safety-Critical Systems: Suitable for projects requiring extensive planning and documentation.

4.1.6.1.6. Cons of the V-Model

  • Limited Flexibility: Difficult to make changes once development has started.

  • Not Suitable for All Projects: Best for well-defined, large-scale projects.

  • Less Effective for Small Projects: Not ideal for smaller, less complex projects.

  • Time-Consuming: Requires extensive documentation, which can slow down the process.