Requirements are those specifications that contain the functional and nonfunctional requirements and additionally they create documents that contain the business requirements and use-case descriptions. There are several benefits of using
Requirement Tools. However, a document-based approach that stores requirements has several limitations such as:
It is not easy to store supplementary information about each requirement.
It is difficult to keep the documents current and synchronized.
In addition to that communicating changes to all affected team members is a manual process.
It is hard to define links between functional requirements and other system elements.
Requirements Tools become most beneficial as it helps the teams memory of the requirements details to fade out. A set of requirement management tools can manage versions and changes the project you are doing. It can also define a requirements baseline. The requirement management tool is a specific collection of requirements that are allocated to a particular release. There are certain requirements management tools which provide flexible baselining functions. The tools are used to maintain a history of the changes that are made to every requirement.
The
Requirements Tools can record the rationale behind the changing decisions and revert to a previous version of a requirement if necessary. There are tools that include Active, Focus and DOORS which contain a simple, built-in change-proposal system that links change requests directly to the affected requirements. There are concurrently managing sets of requirement management tools that are planned for different releases or for related products. When a requirement is deferred from one release to another, an analyst is always in need to move it from one requirements specification to the other. However, reusing a requirement means that the analyst can copy the text from the original RS into the SRS which is ideal for each other system or product where the requirement is to be used.
There are commercial requirements management tools that define different requirement types which include business requirements, use cases, functional requirements, hardware requirements, and constraints. This enables the user to differentiate individual objects that one want to treat as requirements from other useful information contained in the SRS.
