Setting Unique Properties

Use the Unique Name edit box to set the unique name.

Field(s) Name
To set field(s) as unique, just simply double-click the Field(s) Names field or click to open the editor(s) for editing.

Unique Type
Indicate that a clustered or nonclustered index is created for the unique constraint.

Comment
Specify the comment of the unique.

Note: SQL Azure does not support.