Defect prevention

Defect prevention is SQA technique the purpose of which is to identify root causes of defects and prevent them from reoccurring. Defect prevention is one of the important activity of the QA the purpose of which is to identify root cause of the reoccurring defects and prevent them from reoccurring again because reoccurring defects are very costly and wastage of time. This technique is helpful and can be used in all phases of SDLC to filter defects in each phase such that at the we have a product with minimum number of defects, since we can't expect software to 100% defect free so the term minimum number of defects is used in this context.

 Defect Detection and Reduction 

                         

it's another very important QA technique, as we by applying the defect prevention we still can have defect in the software product so to reduce the defect to as minimum level as possible we need effective techniques to remove the injected defect as possible under the project constraints, Defect detection is to detect defect that is injected in the software product and to reduce them.


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