- Default Constraints? for each of the languages:
Alias <> Label
Description <> Label
- Refuse duplicate statements.
When a user did not search or did not find an existing object, one could create by accident duplicate data. Really duplicate data should not be stored and the user should see a "duplicate key" error with no option to save the data until backing off.
- (more) Proactive constraint validation before saving
"an ounce of prevention is worth a pound of cure".