 --  DDL for Table DRGCODES
 --------------------------------------------------------
 
-DROP TABLE IF EXISTS DRGCODES;
+DROP TABLE IF EXISTS DRGCODES CASCADE;
 CREATE TABLE DRGCODES
    (	ROW_ID INT NOT NULL,
 	SUBJECT_ID INT NOT NULL,

--  DDL for Table MICROBIOLOGYEVENTS
--------------------------------------------------------

DROP TABLE IF EXISTS MICROBIOLOGYEVENTS;
CREATE TABLE MICROBIOLOGYEVENTS
   (	ROW_ID INT NOT NULL,
	SUBJECT_ID INT NOT NULL,

--  DDL for Table D_ITEMS
--------------------------------------------------------

DROP TABLE IF EXISTS D_ITEMS CASCADE;
CREATE TABLE D_ITEMS
   (	ROW_ID INT NOT NULL,
    	ITEMID INT NOT NULL,
