You apply and enable a sequence on a column as follows:
        
            - 
                Open the property sheet of the column to which you want to apply the sequence.
            
 
            - 
                On the General tab, select a sequence from the Sequence list.
            
 
            - 
                Click OK to close the property sheet.
            
 
            - 
                Select  to open the Rebuild Triggers dialog box.
            
 
            - 
                Click the Selection tab and select the table or tables containing the column to which you want to attach a sequence.
            
 
            - 
                Click OK.
                
 
                    The triggers are rebuilt and the sequence is enabled on the column.