as-row-change-timestamp-clause 1 FOR EACH ROW ON UPDATE AS ROW CHANGE TIMESTAMP column-constraint 1? CONSTRAINT constraint-name 2.0 PRIMARY KEY 2.0 UNIQUE 2 references-clause 2 CHECK ( check-condition ) datalink-options 1! LINKTYPE URL 2! NO LINK CONTROL 2? 2 FILE LINK CONTROL 2.1 file-link-options 2.1 MODE DB2OPTIONS file-link-options 1+ 1.0 INTEGRITY ALL 1.0 READ PERMISSION FS 1.0 READ PERMISSION DB 1.0 WRITE PERMISSION FS 1.0 WRITE PERMISSION BLOCKED 1.0 RECOVERY NO 1.0 ON UNLINK RESTORE 1.0 ON UNLINK DELETE 2 (1)