<object_spec>::= COLUMN <table_name>.<column_name> | DBPROC[EDURE] <dbproc_name> | DOMAIN <domain_name> | FOREIGN KEY <table_name>.<referential_constraint_name> | INDEX <index_name> ON <table_name> | SEQUENCE <sequence_name> | [PUBLIC] SYNONYM <synonym_name> | TABLE <table_name> | TRIGGER <trigger_name>.<table_name> | USER <user_name> | USERGROUP <usergroup_name> | <parameter_name>