A requirements traceability matrix is a document that traces user requirements from analysis through implementation. It can be used as a completeness check to verify that all requirements are present or that there are no unnecessary/extra features, and as a maintenance guide for new personnel. At each step in the development cycle, the requirements, code, and associated test cases are recorded to ensure that the user requirement is addressed in the final system. Both the user and developer have the ability to easily cross-reference the requirements to the design specifications, programming, and test cases.

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