Thanks, that fixed all of them except this table-
CREATE TABLE PATIENT
(
PATIENT_ID NUMBER(6) NOT NULL
, FIRST_NAME VARCHAR2(10) NOT NULL
, LAST_NAME VARCHAR2(15) NOT NULL
, DOB DATE(10) NOT NULL
, RELATIONSHIP VARCHAR2(10) NOT NULL
, HOUSEHOLD_ID NUMBER(6) NOT NULL
, CONSTRAINT PK_PATIENT_ID...