Diagram of V-model of SDLC

The V-model of software development life cycle (SDLC) is a variation of the traditional waterfall model. It emphasizes the verification and validation of each phase of the development process. The V-model consists of the following phases:

1. Requirements Analysis
2. System Design
3. Architecture Design
4. Module Design
5. Coding
6. Unit Testing
7. Integration Testing
8. System Testing
9. Acceptance Testing

The V-model is represented as a V-shaped diagram, with each phase on the left side of the V corresponding to its corresponding testing phase on the right side of the V. The diagram shows the relationship between the development phases and the testing phases, emphasizing the importance of testing at each stage of the development process to ensure the quality of the software product.

V-Model of SDLC

Verification

- Unit Testing: Tests individual units of code.
- Integration Testing: Tests how different components work together.
- System Testing: Tests the complete system as a whole.

Validation

- Business Requirements Analysis: Defines the functional and non-functional requirements of the system.
- Design: Creates the architectural and functional design of the system.
- Implementation: Develops the system based on the design.

Testing

- Acceptance Testing: Verifies that the system meets the business requirements.
- Regression Testing: Ensures that changes made during maintenance do not impact the system's functionality.