Dennis,
This is similar to the constraint on dp_pub.
CREATE INDEX aop.FK_DP_PUB_SITE ON aop.dp_pub_staging ("SITE")
PCTFREE 10 INITRANS 2 MAXTRANS 255 COMPUTE STATISTICS
STORAGE(INITIAL 10M NEXT 10 MINEXTENTS 1 MAXEXTENTS 2147483645
PCTINCREASE 0 FREELISTS 1 FREELIST GROUPS 1
BUFFER_POOL DEFAULT FLASH_CACHE DEFAULT CELL_FLASH_CACHE DEFAULT)
TABLESPACE "PDRINDX03" ;
ALTER TABLE aop.dp_pub_staging ADD CONSTRAINT "FK_DP_PUB_SITE" FOREIGN KEY ("SITE")
REFERENCES "PDR"."NAM_LOCN" ("NAM_LOCN_NAME") ENABLE;