Regression testing means either with bug fixing or 
enhancements ,if previously existing moudle effects we can 
perform regression testing by writing regression matrix.

Executing the build with previously existed test cases for 
declaring the software is working as before we can do the 
retesting

Regressin Testing:Testing the application before fixing the 
bugs.
Retesting:Testing the application after fixing the bugs.

ReTesting : Check the Bug is closed

Regression Testing: check Impact over the retest


sun_ramprasad@yahoo.com

Regression testing 
regression testing is done to ensure that change in one 
portion of the software product have no bad effect on the 
other portions of the software.Whenever any change is done 
in a small portion regression testing is done.

Re-testing 
testing an already tested product to increase the 
confidance level in a system.

Regression testing:
  The process of testing an application to identify an 
impact of the bug fixed poart of the existing build of the 
application on the other functionalities of the same build 
of application, or to test the impact of the newly added 
functionality (enhancements in the application)on the 
existing functionality of the current version of the 
application is Regression testing, (Impact analysis process 
is carried out in this case)

Retesting:
  The process of testing the application rigorously with 
all the possible inputs to gain more confidence on the 
functionality of the application.  This process is rarely 
carried out, where we have ample time.

Regression testing :
Testing the application whether the changes in the modified 
build will affect another functionalitiles i.e other parts 
of the application 


retesting :
testing the application with multiple sets of data .

retesting doing on particular place where bug is found &
regression testing ,test the whole software.

regressing testing doing on two situation...
1.when bug is fixed
2- when user requst for modification

Retesting:
First we test the total build. In that if we found bugs,we 
fixed and developers close those bugs.
Again we test the modified build. This second time testing 
is called retesting.

regression testing:
First we test the total build.After suppose any new 
functionalites are add to that build.We test these 
functionalites are effected on previous functionalites, is 
called regression testing.

Regression Testing: The re excution of selected test cases 
on modified build to ensure buf fix work without any side 
effects.

ReTesting:ReTesting means repeating the same test on same 
application build with multiple input values.its also known 
as data driven testing

Regression Testing:This is done for the particular module 
to check whether the previous found bug is fixed and 
because of which a new bug has arised or not.

Retest:Is to ensure the application works fine with 
multiple set of data.this is done on the whole application

re-testing: re-execution of affected test case on a 
modified build.
regression testing: the re-execution of all test cases on a 
modified build to ensure bug fix work, and occarence of any 
side effectives.

as per my knowledge

re-testing means testing the build whether raised issue is 
fixed correctly r not
regression testing means testing the build where is there 
any impact due to the fixed bug on the application

Regression Testing: The testing done on new built of the
software to reconfirm that the bug is fixed or not is called
Regression Testing.This is done on the particular area of
the software where the changes are done.
Retesting: Retesting the whole software to test that the new
changes doesn't effect the older functionality of the software.

Regression Testing: Any modification to the application 
should not effact  other modules 

Retesting : Testing the application after fixing the bug

Regression Testing is nothing, we will do the testing on 
modification functionalities. but modified functionalities 
should not effect on existed funxtionalities.
ReTesting: ReTesting is nothing, we want to test the one 
functionality with different inputs, like data driven 
testing

As per my knoeledge i think, Regression testing is made 
whenever changes occur in tne modules to make ensure that 
changes has not affected the other modules.So thats why in 
this we execute the whole build.
And in retesting we cant execute the whole build,in this we 
execute build only to check the functionality of module if 
any problem found and for that part only.