what is test management matrix?

We also call test management matrix as traceability matrix.It is mapping between the requirements and the test cases. Traceability matrix is very useful in the case of changing requirements.

A Test Management Matrix is another name for a Traceability Matrix.  It is a way to map test cases to requirements.  It is used to verify that all test cases are associated with proper requirements and that all requirements are covered by test cases.  It is used to manage test cases as they relate to requirements when there are changes to requirements and/or test cases.

Test management matrix is same as traceability matrix