Test Strategy is nothing but required approach to meet the 
quality standards either in the terms of quality or testing 
process

Depends on corresponding testing policy , quality analyst 
finalizes " test responsibility matrics ( TRM ) "

TRM:-- This matrics provides mapping between test factors 
and development stages.

Test factors : ---

Ease of use
Access control
Authorization
Reliability
Service levels
Correctness
performence
portability
ease of operate
File integrity
audit trail
continuity of processing
coupling
methodology
maintanable

development stages :

Analsis
Design
Coding
System testing
Relaese and maintenance

ok,

Testing approach to test the application.

Test strategy details the way of testing is going to be
carried out in the project.

It gives the details about test methodologies, test
techniques   that performed on the project.