1In table view, click on the Indexes drawer , then double-click on the index you would like to edit; or choose Indexes from the Data menu, then Edit an Existing Index from the submenu.
The Index Information dialog box appears.
2As desired: assign a different column name to the index, change the sort order, or select or de-select the Unique Index check box.
Note
nYou cannot change the index name. If you would like to do so, delete the index, then create a new index.
3Click the Continue button.
Note
nWhen you create or modify an index, the change does not take place until you save the table.