Answer / jawahar

Bug: Mismatch between the expected value and actual value

Defect : Deviation from the client requirement

Answer / chennareddy

ERROR::: It is is human activities of system fault or error

DEFECT::It is miss match between Expected value and present
value


BUG:::if developer can accepting the defect then it's called
the bug.

Answer / sudhakar8

Bug:A catch all term for all software defects or error
Defect:It is “A deviation from specification or standard”
or “Any thing that causes customer dissatisfaction

Answer / audi7777

Defect : If the behavior is not as expected w.r.t requirement specified.

Bug:Is something different has come in, which is not present in the requirements as well.

Answer / rajendra

Actually:
Bug: Deviation from requirement is a bug.
Deffect: Defect is the one which wil cause the software
failure.
so Bug is Cause for defect
Defect is effect of the bug.

One more thing in real time people use these both terms as
Synonymical words. Majority of people say both are same.

still any one of have doubts regarding this concept feel
free to call or mail me

Byee

rajendra_penumalli@yahoo.com
9885162742
hyderabad

Answer / jamal m. aqib

If any bug found in the software means software error is
exist in the software.
If your software is not working means some defect in your
software.
In Short:
Bug: programming error
defect: software not working

what is system specification ? what is functional specification?

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