   ALTER TABLE CHANGG ADD NUMBRR CHAR(11);

   ALTER TABLE CHANGG
     DROP NAAM RESTRICT;

   ALTER TABLE CHANGG
     ADD COLUMN DIVORCES INT DEFAULT 0;

  ALTER TABLE USIG
  ADD COLUMN NUL INT;

   ALTER TABLE T0878 ADD C2 CHAR (4);

   ALTER TABLE USIG
  ADD(COL3 INTEGER, COL4 SMALLINT);

ALTER TABLE X ADD D INT;

   ALTER TABLE CTS1.TESTB6439
         ADD COLUMN 
COLUMNOFCHARACTERDATATYPE123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012C CHAR(3);

   ALTER TABLE CTS1.TAB752a 
         ADD CONSTRAINT TA752a_PRKEY PRIMARY KEY(COL1);

   ALTER TABLE TAB752b
      ADD CONSTRAINT TA752b_FKEY FOREIGN KEY(C2) 
      REFERENCES TAB752a(COL2);

   ALTER TABLE TAB752a
     ADD CONSTRAINT COL3_CHECK CHECK 
     (COL3 IN ('ATHENS','CORFU','PYLOS'));

   ALTER TABLE TAB753 ADD COLUMN COL4 NUMERIC(7);

   ALTER TABLE TAB753 ADD COLUMN COL5 CHAR(7);

   ALTER TABLE CTS1.TAB754 ADD COLUMN COLDOM DOM6138
         CONSTRAINT c3dom_check CHECK (COLDOM <= 1998);

