ans:
Integration Testing:
            Integration testing is mostly conducted in 
white box testing.In the Application developement process 
number of components has been developed i.e depending on 
the Application Requirement.These components are get 
togethered as modules, means  the scenarios which are 
related  to those particular components. Then these 
components are named as one Module.
            Likewise depending on the requirement n number 
of Modules are developed. Finally these Modules are 
combined together to get one Build or Application.

Validation Testing:
            Mainly Validation Testing is done in Blackbox 
Testing.And the final conclusion is not a validation 
testing.

Hai Friends if any thing is wrong from me, Plz give me 
correct response.eid is,
                 <bapiraju_ka@yahoo.com>