User`s guide

5 Requirements Links Maintenance
5-2
Validation of Requirements Links
Requirements links in a model can become outdated when requirements change
over time. Similarly, links in requirements documents may become invalid when
your Simulink model changes, for example, when the model, or objects in the model,
are renamed, moved, or deleted. The Simulink Verification and Validation software
provides tools that allow you to detect and resolve these problems in the model or in the
requirements document.
In this section...
“When to Check Links in a Requirements Document” on page 5-2
“How the rmi Function Checks a Requirements Document” on page 5-3
When to Check Links in a Requirements Document
When you enable Modify destination for bi-directional linking and create a
link between a requirement and a Simulink model object, the RMI software inserts a
navigation control into your requirements document. These links may become invalid if
your model changes.
To check these links, the 'checkDoc' option of the rmi function reviews a requirements
document to verify that all the navigation controls represent valid links to model objects.
The checkDoc command can check the following types of requirements documents:
• Microsoft Word
• Microsoft Excel
• IBM Rational DOORS
The rmi function only checks requirements documents that contain navigation controls;
to check links in your Simulink model, see “Validate Requirements Links in a Model” on
page 5-4.
Note: For more information about inserting navigation controls in requirements
documents, see:
• “Insert Navigation Objects in Microsoft Office Requirements Documents”
• “Insert Navigation Objects into DOORS Requirements”