What type of notation is used to express a trace requirement relationship?

The trace requirement relationship is represented by a dashed line with an open arrowhead in modeling notations. This specific notation is used to signify that there is a tracing relationship, indicating a connection between different elements without implying a strong association. The dashed line implies a level of abstraction or a non-continuous relationship, which is appropriate for traceability purposes. It allows for a clear distinction between more rigid relationships, such as generalization or association, and the more flexible traceability that often exists in requirements documentation.

In the context of systems modeling, traceability is crucial for ensuring that all requirements are accounted for throughout the design and development process. The use of this notation helps modelers and stakeholders easily identify how requirements are linked, supporting better understanding and management of the system's development lifecycle.