Figure 1: Sample XML document with customer orders.

<BookedOrders xmlns:xsi="http://www.w3.org/2000/10/XMLSchema-instance">
    <CustomerOrder>
        <OrderID>1000</OrderID>
        <Customer>XYZ Inc.</Customer>
        <Item>Steel</Item>
        <Unit>Ton</Unit>
        <Quantity>2.8</Quantity>
    </CustomerOrder>
    <CustomerOrder>
        <OrderID>1001</OrderID>
        <Customer>ABC Inc.</Customer>
        <Item>Plastic</Item>
        <Unit>Roll</Unit>
        <Quantity>30.5</Quantity>
    </CustomerOrder>
</BookedOrders>