-- Licensed Materials - Property of IBM -- -- BI and PM: CM -- -- (C) Copyright IBM Corp. 2013 -- -- US Government Users Restricted Rights - Use, duplication or disclosure -- restricted by GSA ADP Schedule Contract with IBM Corp. alter table CMTENANTID drop constraint UN_CMTENANTID_TENANTNAME alter table CMTENANTID alter column TENANTNAME nvarchar (255) NOT NULL alter table CMTENANTID add constraint UN_CMTENANTID_TENANTNAME unique (TENANTNAME)