For automation interface information about the Unique property, see the automation interface topic for the owning item type in the Related Topics.

This property specifies that each value in a Column or Index must be unique.

By default, the Unique check box is cleared.

This property is set on the Options tab of a Column's and Index's Property Pages.

The following section provides information about the items and diagrams for which Unique is a property. For more information about an item or diagram, click it.