Content ITV PRO
This is Itvedant Content department
V - Model
History of the V-Model
The V-Model evolved from the traditional Waterfall model in the late 1970s and 1980s.
-
Waterfall had a problem: testing was done only at the end.
-
Many defects were found very late.
-
Fixing them became expensive and risky.
-
So experts introduced the V-Model to integrate testing early in development.
It became popular in:
Defence Project
Health Project
Bank Project
Areospace Project
Who Invented the V-Model?
There is no single inventor officially credited.
However:
-
It was developed as an improvement over the Waterfall Model.
-
It was heavily used and standardized in German government projects.
-
So, it is considered an evolutionary model, not a model invented by one single person.
-
Many software engineering researchers contributed to shaping it.
Why Was the V-Model Created?
The main problems in Waterfall were:
❌ Testing started very late
❌ High defect cost
❌ Risk in critical systems
❌ No clear mapping between
development & testing
To solve these issues, the V-Model introduced:
✅ Early test planning
✅ Reduced project risk
✅ Better quality control
✅ Each development phase has a corresponding testing phase
Definition V-Model
V-Model is an SDLC model where development and testing are done in parallel, and each development phase has a corresponding testing phase to ensure high quality.
Purpose of the V-Model
The main purpose is:
-
Early Detection of Defects
Testing is planned from the beginning.
-
Clear Traceability
Every requirement has a related test case.
-
Better Quality Assurance
Verification + Validation at every stage.
-
Suitable for Critical Projects
Used in:
-
Banking software
-
Hospital systems
-
Aircraft systems
-
Government applications
Real-Life Example
Imagine building hospital management software:
-
Requirement: “System should store patient records securely.”
-
During requirement phase → Acceptance test cases are written.
-
So testing is not an afterthought — it is planned from Day 1
-
During design phase → System test cases are prepared.
-
During coding → Unit tests are executed.
Why Are We Still Using It Today?
We use the V-Model when:
✔ Requirements are clear and stable
✔ Project is high-risk
✔ Documentation is important
✔ Safety is critical
v-model
By Content ITV
