What is RTM and use of it while developing a software ?

Question

This is general question on review of the code/design reviews

If we change code in some unknown area, along with fresh code. Is it better to ask the part of code changed from unknown area to be reviewed by someone who is working in that area ?

Is this bad idea for the very small company to ask changes to be reviewed ?

Difficulty is in small companies there is no proper testing tools to test we have broken some existing scenarios.

Answer 1

RTM is commonly used term in software engineering. Its full form is "Requirement Trace-ability Matrix". It is prepared and used to track development of software. Typically, every software development involves HLD, LLD, Coding, Unit Testing and System Testing.
Every software project starts with an expectation, I mean to say with some feasible requirements. Every requirement is documented in SRS i.e. known as "Software Requirement Specification" and these requirements are tracked in all the documents/code further.
Project manager or senior member from the team go through this RTM sheet and verifies each and every thing in the context of completeness of SRS requirements.