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Question
What is the difference between bug,defect, error, failulre, 
fault & mistake?
 Question Submitted By :: Cdevaki
I also faced this Question!!     Rank Answer Posted By  
 
  Re: What is the difference between bug,defect, error, failulre, fault & mistake?
Answer
# 1
Bug is from tester's perspective 

"The output that deviates from the actual requirement 
(SRS). In that case tester call it a bug and developer call 
it a defect."

Defect is from developer's perspective

Error occurred while coding or some logical error. 

Failure &fault is same and can be difined as when client 
fails to get the required results during acceptance testing 
he/she termed it as failure/fault.

Feel free to comment 
Thanks
Jai
 
Is This Answer Correct ?    3 Yes 2 No
Jai
 
  Re: What is the difference between bug,defect, error, failulre, fault & mistake?
Answer
# 2
bug:its an informal name given to defect.
error:this terminology is used by developers,they may get
compile time error or run time error.
failure:defect leads to failure of bussiness...

one defect may leads to multiple failure or one failure..
these are the differences i feel.
 
Is This Answer Correct ?    0 Yes 1 No
Jyothi
 
 
 
  Re: What is the difference between bug,defect, error, failulre, fault & mistake?
Answer
# 3
Let me explain with an example.

If input is 2+2, then output is an error message, it is
error(syntax error).

If input is 2+2, then output is 5, it is bug(logical error).

If the program is for addition and subtraction, and only
addition is there and subtraction is left out, it is defect.


Usually the error is found by developer.

Usually the bug is found by tester.

Usually the defect is found by client or user.
 
Is This Answer Correct ?    2 Yes 0 No
Param Gates
 
  Re: What is the difference between bug,defect, error, failulre, fault & mistake?
Answer
# 4
Bug- Bug should be found during testing the application 

Error:It is a non-conformance to the explicitly stated
requirement. It should be found during unit testing or
compiling the code

Defect: A defect is any of the above but found/un-covered in
the “released-application” - running in the “Production
Servers” [gone “Live”] or may be in “Beta-Release”.

Fault: When the application runs without any issues in the
intended Production Environment under normal circumstances
but misbehaves after continuously running for about a month
or after performing about a million transactions then we
call this condition as Fault.
 
Is This Answer Correct ?    0 Yes 0 No
Krish
 

 
 
 
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