Book a Demo

Please note : This help page is not for the latest version of Enterprise Architect. The latest help can be found here.

Prev Next


A Boundary element, as used on Robustness diagrams.


A Boundary is a stereotyped Object that models some system boundary, typically a user interface screen. You can also create a Boundary as a stereotyped Class. Boundary elements are used in analysis to capture user interactions, screen flows and element interactions (or 'collaborations').

A Boundary is used in the conceptual phase to capture users interacting with the system at a screen level (or some other boundary interface type). It is often used in Sequence and Robustness (Analysis) diagrams. It is the View in the Model-View-Controller Pattern.

Toolbox icon

Boundary element

Learn more