Exact difference between Bug, Error & Defect?

Lets Discuss?

Replies to This Discussion

Permalink Reply by Menakshi Kumari on March 6, 2009 at 3:29pm

Error: It is the Deviation from actual and the expected value.

Bug: It is found in the development environment before the product is shipped to the respective customer.

Defect: It is found in the product itself after it is shipped to the respective customer.

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Permalink Reply by Balaji on March 24, 2009 at 12:17pm

Error: Programmatically mistake leads to error. If the developer wrongly coded then he can get the error due to its wrongly coded.
Bug: Deviation from the expected result. Once the application is developed and once it comes for testing, during that time if there is any deviation from the expected results, then it's a bug. For eg: If the expected result is 2 and we are getting something then its a bug.
Defect: Problem in algorithm leads to failure.

Regards,
Balaji

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Permalink Reply by Shakthi on March 6, 2009 at 4:13pm

Nitin,

I think already some of our QT member raise same Question. Plz have have look tht discussion, its may be useful for u. Thanks!

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Permalink Reply by Nitin on March 6, 2009 at 4:22pm

Thanks Shakthi

Its a duplicate post..

Here is the original one

http://www.qualitytesting.info/forum/topics/what-is-a-bugdefect?pag...

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Permalink Reply by Nitin on March 6, 2009 at 4:28pm

Bug : Any discrepancy found during testing of software
product.

Defect: Any discrepancy found by the customer in the
software product after the release in to production

Error: Any discrepancy in the coding

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Permalink Reply by Rashmi Kamath on March 24, 2009 at 1:50pm

Bug - When the software does not perform as expected

Defect - When the software has a undesirable feature

Error - When the software deviates from a correct value