Example Diagram

You can create diagrams to show a wide variety of relationships, and you are not restricted to having either a single element type or elements from a single phase on a diagram. Therefore, you can create appropriate relationships (such as Realize or Trace) to elements where no relationship was previously defined.

Consider the following diagram, which shows how a series of requirements are traced to Use Cases and then Classes:

 

Traceability-Trace

 

The diagram instantly shows:

That two levels of Requirements are realized by Use Cases
Which Requirement is realized by which Use Case(s)
How some of the Use Cases are implemented by Class elements
 

You can drill down on each Use Case (or, in other Traceability diagrams, any other composite element) to display more detailed diagrams showing how the Use Case meets the Requirement; the Close Account Use Case, for example, contains a Communication diagram and a Sequence diagram.

You can tailor your Traceability diagrams to depict any level of granularity and any stages of development that are appropriate; for example, you might:

Narrow the above diagram to show development from just the Remove User Requirement, or
Extend it to include Interfaces, Components, Test Case elements or any other facet of the system or process
 

Building a diagram

A number of tools are available to for creating diagrams that show traceability:

Select the diagram context menu option Add | Related Elements to automatically add elements linked to the selected element
On the Relationships window, use the context menu option Place Related Element in Diagram to add elements to the diagram that are directly linked to the selected element
On the Traceability window, add elements that are indirectly linked
 

Notes

Whilst the Traceability diagram itself provides information on the definition, design and implementation of a business process feature, much more information can be obtained using the Traceability tools
 

Learn more