Regression testing means testing the application whether 
any new bugs are introduced while fising the bugs by the 
developers.

Testing team will execute all the testcases again even the 
test cases were passed in the previous build.

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regression testing is a re-testing of depended module or
application .

after receiving modified built from development team tester 
will check  that any other module was effected or not due 
to  fixing of earlier defect.

   it is atype of testing in which an alredy tested
functionality is tested onceagain inorder to check if the
functionality is bug free and also to check the existig
functionality is uneffected whenever a new change is added.
    two types of regresssion testings are there.
    1.functional regression testing
    2.bug regresion testing.

It is done to ensure that the enhancement of the 
product or bug fixed, does not affect the
Existing functionality of the product.  Its nothing but re 
execution of some or all the test cases.
      Regression testing is nothing but re-execution of 
selected test cases on modified build (means which ever 
failed in the previous build).
1.	Regular regression test
2.	Final regression test
umesh (Tejasoft)

It is a process of retesting the modified build, intened to 
find new issues of the modifications fixed.

When we get the bug, developer will fix that, after fixing that we have to reset the bug and as well we have to test other parts also to check whether fixing this bug cause to raise another bug or issues.