Incremental approach
a. Top down approach
b. Bottom Up approach
c. Sandwich approach
Big Bang Approach:
In Big Bang approach, all the units are integrated together and then tested. The system is not tested until all the modules are ready. When all the modules are ready then they are integrated and tested. Big Bang Integration testing is also known as Usage Model Testing.
Incremental Approach:
In Incremental approach, two or more modules are joined logically and then tested. Stubs and Drivers are used in this testing approach.
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