What is the difference between Regression Testing and Retesting?

Answer Posted / prabhu

Testing all ready tested functionality,with diff sets of
test data is Retesting
Testing all ready tested functionality is Regression testing
it can be in two ways
1.When the bug is fixed,we test the functionality weather it
is fixed correctly and also we test the related
functionality have been effected or not
2.when any new requirement is incorporated on customer
request, then we we test the related functionality have
been effected or not, which is also a regression testing

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