Why Testing?











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1.Verify that all requirements are applied correctly (for both positive & negative conditions)
2.Identify defects before program deployment
3.Helps improve the quality & reliability.
4.It makes the predictable program behavior.
5.Reduce the incompatibility & interoperability issues.
6.Help marketability & customer retention.

Quality Control VS Quality Assurance :
Quality control: mechanism to ensure that quality characteristics are necessary in the done product
Quality Assurance: Ensures that the quality of the management of working procedures.

Source of Defect:

 


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