What are different methods of verification and validation?

Verification and validation together can be defined as a process of reviewing and testing and inspecting the software artifacts to determine that the software system meets the expected standards. There are various methodologies for verification different kinds of data in software applications. The different methods have been discussed below:

- File verification
It is used to check the integrity and the level of correctness of file. It is used to detect errors in the file.
- CAPTCHA
It is a kind of device that is used to verify that the user of the website is a human being and not some false program intended to hamper the security of the system.
- Speech verification
This kind of verification is used to check the correctness of the spoken statements and sentences.
- Verify command in DOS.

Apart from verification techniques for software applications there are several other techniques for verification during the development of software. They have been discussed below:

- Intelligence verification
This type of verification is used to adapt the test bench changes to the changes in RTL automatically.
- Formal verification
It is used to verify the algorithms of the program for their correctness by some mathematical techniques.
- Run time verification
Run time verification is carried out during execution. It is done to determine if the program is able to execute properly and within the specified time or not.
- Software verification
This verification type uses several methodologies for the verification of the software.

There are several other techniques used for verification in circuit development. - Functional verification
- Physical verification
- Analog verification

Verification, Validation, and Testing of Engineered Systems

Fundamentals of Verification and Validation

Verification and Validation in Computational Science and Engineering