CREATE TABLE "DEPARTMENTS" 
   (	"DEPARTMENT_ID" NUMBER(4,0), 
	"DEPARTMENT_NAME" VARCHAR2(30) CONSTRAINT "DEPT_NAME_NN" NOT NULL ENABLE, 
	"MANAGER_ID" NUMBER(6,0), 
	"LOCATION_ID" NUMBER(4,0), 
	 CONSTRAINT "DEPT_LOC_FK" FOREIGN KEY ("LOCATION_ID")
	  REFERENCES "LOCATIONS" ("LOCATION_ID") ENABLE
         --, 
	 --CONSTRAINT "DEPT_MGR_FK" FOREIGN KEY ("MANAGER_ID")
	  -- REFERENCES "EMPLOYEES" ("EMPLOYEE_ID") ENABLE
   ) ;
  CREATE UNIQUE INDEX "DEPT_ID_PK" ON "DEPARTMENTS" ("DEPARTMENT_ID") 
  ;
ALTER TABLE "DEPARTMENTS" ADD CONSTRAINT "DEPT_ID_PK" PRIMARY KEY ("DEPARTMENT_ID")
  USING INDEX "DEPT_ID_PK"  ENABLE;