RAD Studio (Common)
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Constraints Collection Editor

Use this dialog to add, configure, and remove constraints to or from a dataset's DataTable columns. You can manage unique constraints and foreign key constraints in this editor.

Item 
Description 
Add  
Adds either a unique constraint or a foreign key constraint to the DataTable column.  
Edit  
This button appears after you have added a constraint. It allows you to change the columns specified in the constraint.  
Remove  
Removes the selected constraint from a DataTable column.  
Properties  
The properties list is read-only, because all properties displayed here are derived from existing dataset and column definitions. You can, however, expand selections in this list to view the specific properties for a given column, and for the constraint itself.  
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