2008.04.01 08:01

Difference between defect,error,bug,failure and fault

Error : A discrepancy between a computed, observed, or measured value or condition and the true, specified, or theoretically correct value or condition. See: anomaly, bug, defect, exception, and fault

Failure: The inability of a system or component to perform its required functions within specified performance requirements. See: bug, crash, exception, fault.

Bug: A fault in a program which causes the program to perform in an unintended or unanticipated manner. See: anomaly, defect, error, exception, fault.

Fault: An incorrect step, process, or data definition in a computer program which causes the program to perform in an unintended or unanticipated manner. See: bug, defect, error, exception.

Defect: Mismatch between the requirements.

출처: http://software-testing-faq.blogspot.com/2007/08/difference-between-defecterrorbugfailur.html
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