Tracability Matrix

Hai
by using TRM(means tracebility req matrix) we can know the 
how many of the test cases are covered and how many of test 
cases are not covered.

we will ensure that all testcases are covered or not by 
means of traciblity matrix.it is like a check list.we will 
check each test case with the requirements.

By looking at these tracibility matrix. we can check all 
the test cases are coverd or not.
by looking at these tracibility matrix we can check all the 
testcases are written as per the srs brs documentes.