Traceability

Allowable manual traceability links

CAIRIS is based on the IRIS meta-model. In most cases, traceability between model elements is automatic because the CAIRIS database knows how model elements are connected based on this meta-model. In some cases, however, it is necessary to add manual traceability relationships, e.g. between one requirement and other.

The table below indicates what manual links are allowed to be set between elements.

From	To
Requirement	Task
Task	Vulnerability
Requirement	Vulnerability
Asset	Requirement
Requirement	Role
Requirement	Use Case
Use Case	Task
Requirement	Requirement
Requirement	Document Reference
Risk	Threat
Risk	Vulnerability
Component	Use Case
Document Reference	Vulnerability
Document Reference	Obstacle

Editing manual traceability links

To add manual traceability links, right click on the left arrow for a Supported by (pre-traceability) link, or the right arrow for a Contributes to (post-traceability link). This will open a modal box for adding the forward or backwards traceability link.

If the traceability link is between two requirements, you will also be able to add a label describing the nature of the traceability.

To delete a manual traceability link, select the Options / Traceability menu, select the environment that the traceability link is specific to if appropriate, and select the delete icon.

Visualising manual traceability links

Manual traceability links might be visualised in different ways. For example, in this example, a consequences link is added between the Log Event use cases and Modify PLC software task, which is visible on task models.