Please note : This help page is not for the latest version of Enterprise Architect. The latest help can be found here.
Constraints
If you need to define the conditions and rules under which an element operates and exists, you can do this by setting Constraints on the element, in conjunction with responsibilities (internal requirements). Typical constraints are pre- and post- conditions, which indicate things that must be true before the element is created or accessed and things that must be true after the element is destroyed or its action is complete.
You can show the constraints for an element directly on the diagram, using the Feature Visibility function; this also reveals any constraints inherited from parent elements.
Access Double-click element > Constraints
Define constraints for an element
Field/Button |
Description |
See also |
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New |
Click on this button to clear the fields ready to create a new constraint.
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Constraint |
Type the value of the constraint.
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Type |
Click on the drop-down arrow and select the appropriate type (Pre-condition, Post-condition or Invariant).
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Status |
Click on the drop-down arrow and select the appropriate status.
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Notes |
Type any additional information required.
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Save |
Click on this button to save the constraint data.
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OK |
Click on this button to close the dialog.
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