Interview Questions

What a Coverage Matrix is? or What is a traceability matrix?

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What a Coverage Matrix is? or What is a traceability matrix?


Answer1:
It is a mapping of one baselined object to another. For testers, the most common documents to be linked in the manner are a requirements document and the written test cases for that document.
In order to facilitate this, testers can add an extra column to their test cases listing the requirement being tested.
The requirements matrix is usually stored in a spreadsheet. It contains the test ids down the left side and the requirements ids across the top. For each test, you place a mark in the cell under the heading for that requirement it is designed to test. The goal is to find out which requirements are under-tested and which are either over tested or which are so large that too many tests have to be written to adequately test it.

Answer2:
The traceability matrix means mapping of all the work products (various design docs, testing docs) to requirements.

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