RTM is a document that tell the relationship between requirements and other artifacts .it is used to prove that the requirements have been fulfilled and it is typically documents requirements, tests, test results, issues as well as it also ensures that they are duly tested with respect to test parameters and protocol. It is used to show the missing requirements or conflicts on the document It ensures the the complete test coverage and also considered the efforts of the testing teamwork towards reworking and reconsidering on the test case.
Requirement traceability matrix allows to draw UML diagrams ,prepare functional requirement from business requirements all architects comes up with technical requirements and will have functional requirement as well as technical requirements. The requirements are mapped to the respective cases so that all tests cases are covered to the test to defined functionality.
Hence, when it is required to perform regression testing, this accurate information in the RTM helps to select a reasonable set of tests cases to be run. The purpose is listed below:
Meeting goals: When done well, traceability follows the life of a requirement. It starts at the time a requirement originates and it continues on through fulfillment of the requirement. So, it makes sure that your requirement fulfills your original goals. For example, it gives you proof that you met compliance requirements.
Running the right tests: Requirement traceability also helps your quality assurance (QA) team understand what needs to be tested. This improves test coverage by mapping test case back to each requirement so qa will be able to test all of the right things and a result, you will be able to show that your requirements have been properly implemented.
Making decisions: Traceability can also be useful for managing projects You ‘ll know exactly how far you’ve progressed and you will be able to manage the scope of your requirements and if requirement changes you will be able to analyze the impact of that changes across development. It also helps in knowing product design which will be impacted by requirements.
Managing projects: Traceability is also useful for managing projects .By linking your requirements to tests, you will understand how you can realistically meet those requirement and still ship on time.
Each industry that produces software or hardware could use requirement traceability but it is presenting need for industries with something to prove. Heavily regulated industries need traceability to provide compliance. These are typically quality-and safety-critical industries get visibility across development make better decisions. i.e changes Accelerate release cycles rest easy knowing your requirements are fulfilled. Prove compliance faster, pass audits without fear .RTM can be utilized to serve many purposes after initially being used as a planning tool, later when the test cases are developed and validation testing begins, RTM can be used to help determine the scope of regression test on the basis of relationships between requirements, design, code and test case .It also keep track of record the history of an item which is for minimize risk.