entry                     exit
 
unit test     to check the modules        white box testing 
level                                     is done

integration   exit of unit test           WBT + BBT 
test

system test    exit of integration          100% BBT
               test

UAT           exit of system test         may be WBT
                                          and compulsary BBT


arthieviswa

Entry criteria is what has been agreed by relevant parties 
as to what needs to be completed before a particular phase 
of testing can begin. This can include fully documented 
release notes, completion of other test phases etc. Exit 
criteria is what needs to be completed before a test phase 
can finish. This can mean a certain percentage of test 
coverage, or based on there being only X number of critical 
bugs. Hope this helps further

Entry Criteria: This defines the minimal requirement to 
start the testing activities in the test cycle. For 
example, Stable Test environment, Approved Test cases, 
Valid Test data , etc.

Exit Criteria: This defines the coditions/ statements which 
can conclude the testing. Exapmple, For fixed Bid Projects( 
one full cycle of Functional Testing). For other projects ( 
Testing continued until all high priority defects are fixed 
or do not exist.

Entry criteria means when we should start testing.this 
comes in to existence
1)after preparing complete & correct testcases.
2)after creating testing environment
3)after recieving a stable build from the development team.

Exit criteria means when we can stop testing.This comes in 
to existence,
1)after completion of all modules testing
2)after completion of all major bugs resolving

entry criteria:-
1.when all the testcases are documented
2.when we took the complete prvious document
3.the complete specefications are approved

exit criteria:-
1.all the test cases successfully completed
2.no critical defects found
3.test results are documented