When you use the I10 interface, you can use the PBCatalogOwner DBParm on the System tab page to assign a nondefault owner to the extended attribute system tables. For ANSI-compliant databases, the owner name that you specify must be unique but the table name does not have to be unique. You can create multiple sets of catalog tables prefaced with different user names. However, if the database is not ANSI-compliant, the table name must be unique, so that only one set of catalog tables can be created with an assigned owner name.