Hi Traceablity matrix:it matches between your test cases and Funtional spections..whether all your test cases are meeting the Functional speaciations of the requrimentTest startegy:The way we approach to the application .How we are approch towards the application during intergration and funational and system and compatablity testings and more ...
Tracibility matrics:The gathering the information form the sources and listing them in a perticulaer formate as a date to make ensure theat all the required information has been coverd.
Test strategy:The defined way of approch to shoot the risk or the methods followed to reduce the risks involved in implementing a project and the planning done for an optimal production.