Integration: The process of combining components into 
larger assemblies.

System Testing: The process of testing an integrated system 
to verify that it meets specified requirements.

testing a group of modules in our application is called 
integration testing

Testing an integrated sytem is called system testing

Integration Testing means testing using stubs and drivers 
insted of original modules but in system testing, based on 
all original forms and modules

Integration Testing:Testing of combined parts of an 
application to determine if they function together 
correctly. Usually performed after unit and functional 
testing. This type of testing is especially relevant to 
client/server and distributed systems. 

System Testing: Testing that attempts to discover defects 
that are properties of the entire system rather than of its 
individual components. 

Integration Testing:- Means that compositon of that modules.
During integration testing different types of approches
avilable they are
1.Top down approach
2.Bottom up approach and
3.sandwhich approch.

System Testing:- Means testing the system as a whole to
validate that it meets its specifications or not.

Prasad maddela,
098416 55478.

in Simple words we can say

INTEGRATION Test:: testing the interface b/w more than two 
components, or combinig them and test the flow.

SYSTEM test:: testing the appl or product or u r s/w that 
dev environment shud be same as u r production environment.

Integration testing:testing the interface/relationship/data
flow of the appilication ....
system testing:testing the whole appilication against
requirment ...
so first functional testing,integration testing and last
system testing...

Integration Testing: In Integration testing we are 
integrating different modules to check wheather they are 
working as per the specification.
System Testing: In system testing we are the system as a 
whole i,e hardware as well as software.