What Are Reviews? | Errors and defects | Defect Amplification

What Are Reviews?

• Introduction : Software reviews are a “filter” for the software process.
• Reviews are applied at various points during software engineering and serve to uncover errors and defects that can then be removed.
• Software reviews “purify” software engineering work products, including requirements and design models, code, and testing data.
• Technical reviews – TR (Peer Reviews) are the most effective mechanism for finding mistakes early in the software process.
• Six Steps are employed (Planning-Preparation-Structuring meeting Noting error-Making correction-Verifying correction)

What Do We Look For?

• Errors and defects
• Error — A quality problem found before the software is released to end users
• Defect — A quality problem found only after the software has been released to end-users
• The primary objective of technical reviews is to find errors during the process so that they do not become defects after release of the software. 
• The obvious benefit of technical reviews is the early discovery of errors so that they do not propagate to the next step in the software process.

Defect Amplification (Extension / Increase)

• A defect amplification model can be used to illustrate the generation and detection of errors during the design and code generation actions of a software process.