Software QA Testing Question:

(2)A matrix that records the relationship between two or more products; e.g., a matrix that records the relationship between the requirements and the design of a given software component. See: traceability, traceability analysis.
(1)Traceability Matrix is for mapping the requirements to Test cases. To verify whether all the test cases covering all the stated requirements or not. The purpose of the Traceability Matrix is to identify all business requirements and to trace each requirement through the project's completion.