Software Testing Tutorial #27 - Verification and Validation in Software Testing

In this Software Testing Tutorial, we will learn about the differences between verification vs validation in software testing. Verification versus validation is similar to static testing and dynamic testing. Verification is static testing and validation is dynamic testing in software testing.

Static testing or verification is testing of software documents like requirements, software code, design documents, plans etc. without executing the code, however, validation is to test the software after executing the application.

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[manoj_mafiosi]

**Notes: Verification and Validation in Software Testing - Software Testing Tutorial #27**

**Verification vs. Validation: Static vs. Dynamic Testing:**
- Verification is equivalent to Static Testing.
- Validation is akin to Dynamic Testing, mirroring the distinction between Static and Dynamic Testing.

**Origin of Verification vs. Validation: The V-Model:**
- These concepts originate from the V-Model.

**Verification: Static and Manual:**
- Verification involves manual review of documents and artifacts without code execution.
- It includes scrutinizing documentation like software requirements, design plans, and code.
- Analogous to a code review, where developers inspect code for best practices and standards.

**Validation: Dynamic and Executable:**
- Validation represents Dynamic Testing.
- It involves actively running executable code in a test environment.
- In a web application example, Validation occurs when users interact with the live web application through a web browser.
- Dynamic Testing includes code execution.

**Key Differences Explained:**
1. **Process of Manual Checking**: Verification manually checks documents, while Validation dynamically tests executable code.

2. **No Code Execution in Verification**: Verification does not execute code but reviews documentation and design.

3. **Finding Bugs Early**: Verification detects bugs and defects early in the software development cycle, reducing the cost of resolution.

4. **Cost of Defects**: Fixing defects found during Verification is cost-effective as they are detected early, unlike defects discovered during Validation, which can be expensive to fix.

5. **Testing Techniques**: Verification primarily uses techniques like reviews, code inspections, walkthroughs, and technical reviews. Validation encompasses various testing types, including unit, integration, system, acceptance, and regression testing, where code execution is pivotal.

[jyzzangno]

Very clear what's different between Verification & Validation.

[TG-rimu]

Thank you, your videos are really greatly done.

[elnino]

I really appreciate your efforts. Great teacher * * * * *

[deannalipowicz]

Thank you very much for this video. Very informative

[bheemshankar_pk]

very detailed and informative video thanks for sharing your knowledge

[narisap.]

Thank you for all vdo you made.. really appreciated

[mujtabakhan]

made it really easy to understand thanks sir

[bobolinho]

This is incorrect. Verification is not static testing only. I agree that the foundation istqb sylabus lets place of interpretation. But to understand better verification vs validation start first with Test manager sylabus.

[Ruchita_Biradar]

Sir, please make a video on QA and QC difference..

[erolgyrbev]

Wow! You make a very high quality videos! Your explanation skills are so good sir!

[generalfikhman]

Thank you ho pajeet of the web, you truely helped me :D
I love india <3

[Sira-]

As far as I've read on the topic this particular video goes against it in someways.
Validation is done to insure that the software is up to the client requirements.
While Verification is done to insure that the software is true to its specifications.

[Ruchita_Biradar]

Sir, please make a video on QA and QC difference..