Learn about the “V Model” in software testing, its classification as an SDLC model, and its role in ensuring rigorous testing and development processes.
Table of Contents
Question
“V Model” comes under which of the following category?
A. SDLC Model
B. Test Level
C. Test Type
D. Test design technique
Answer
A. SDLC Model
Explanation
The “V Model,” also known as the Verification and Validation model, is a type of Software Development Life Cycle (SDLC) model. It is widely used in software engineering to ensure that development and testing activities are systematically planned and executed in parallel.
The V Model is a structured SDLC approach where each development phase corresponds directly to a testing phase. The process follows a sequential path resembling the shape of the letter “V,” with development activities on the left side and corresponding testing activities on the right side. The coding phase acts as the base of the “V,” connecting these two sides.
Key Features of the V Model
- Sequential Execution: Each phase must be completed before moving to the next.
- Parallel Testing: Testing is planned alongside development, ensuring early defect detection.
- Verification and Validation:
- Verification: Activities like requirements analysis and design reviews ensure that each phase meets its objectives.
- Validation: Testing activities confirm that the final product meets user requirements.
Why Is It an SDLC Model?
The V Model is classified as an SDLC model because it provides a comprehensive framework for managing both development and testing processes throughout the software lifecycle. It emphasizes:
- A clear structure for planning and execution.
- Integration of testing at every stage, from requirements gathering to user acceptance testing.
- Systematic progression from high-level requirements to detailed implementation.
This makes it distinct from other categories such as test levels (e.g., unit, integration) or test types (e.g., functional, non-functional).
Advantages of the V Model
- Early identification and resolution of defects.
- Clear traceability between requirements, design, implementation, and testing.
- Ideal for projects with well-defined and stable requirements.
Limitations
- Rigid structure makes it less adaptable to changes during development.
- Not suitable for projects with evolving or unclear requirements.
In summary, the “V Model” belongs to the category of SDLC Models because it defines a structured approach to software development and testing processes, ensuring quality and compliance at every stage.
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