Software verification

Software verification is a discipline of software engineering whose goal is to assure that software fully satisfies all the expected requirements.

There are two fundamental approaches to verification:

Dynamic verification is performed during the execution of software, and dynamically checks its behaviour; it is commonly known as the Test phase. Verification is a Review Process. Depending on the scope of tests, we can categorize them in three families:

Software verification is often confused with software validation. The difference between verification and validation:

The aim of software verification is to find the errors introduced by an activity, i.e. check if the product of the activity is as correct as it was at the beginning of the activity.

Static verification is the process of checking that software meets requirements by inspecting the code before it runs. For example:

Verification by Analysis - The analysis verification method applies to verification by investigation, mathematical calculations, logical evaluation, and calculations using classical textbook methods or accepted general use computer methods. Analysis includes sampling and correlating measured data and observed test results with calculated expected values to establish conformance with requirements.

...
Wikipedia