There are 3 type of R.T

1. Unit R.T

2. Regional R.T

3. Full R.T.

In unit R.T test only the unit i.e have confindence that it

not break other area of the module in that case testing

particular unit called Unit R.T

Reginonal R.T. after fixing bug retest the fixed area &

impact area which ll break the other area identify impact

area and test or do regressiong testing on those area this

is most widly used in company

Full R.T. in this case after fixing bug the chages

affecting whole module that case insted of checkig impact

area do full regression testig