Advanced Queuing - Oracle

General Features of Advanced Queuing
The order type of the Order Entry application (in schema OE) is as follows:
create or replace type order_typ as object (
orderno number,
status varchar2(30),
ordertype varchar2(30),
orderregion varchar2(30),
custno number,
paymentmethod varchar2(30),
items orderitemlist_vartyp,
ccnumber varchar2(20),
order_date date);
create or replace type customer_typ as object (
custno number,
custid varchar2(20),
name varchar2(100),
street varchar2(100),
city varchar2(30),
state varchar2(2),
zip number,
country varchar2(100));
create or replace type book_typ as object (
title varchar2(100),
authors varchar2(100),
ISBN varchar2(20),
price number);
create or replace type orderitem_typ as object (
quantity number,
item book_typ,
subtotal number);
create or replace type orderitemlist_vartyp as varray (20) of
orderitem_typ;
The order item of the shipping application is defined as follows
create or replace type order_typ_sh as object (
orderno number,
status varchar2(30),
ordertype varchar2(30),
orderregion varchar2(30),
customer customer_typ_sh,
paymentmethod varchar2(30),
A Sample Application Using AQ 8-7