Static white box testing:

=>Code walkthrough 
This testing is also known as technical code walkthrough, in this testing process a group of technical
people go through the code. This is one type of semi-formal review technique. In Code walkthrough process a high level employees involved such as technical leads, database administrators and one or more peers. The people who involved in this technical code walkthrough they raise questions on code to author, in this process author explains the logic and if there is any mistake in the logic, the code is corrected immediately.

Advantages of Code walkthrough:
The main advantage of code walkthrough is that as a group of technical leads who have experience in programming look through the code, so the defects that are related to database or code can be easily identified. More over this process aid to ensure that program follows the proper coding standards.