<!-- https://msdn.microsoft.com/ko-kr/library/dd489283.aspx -->
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            xmlns:tns="http://tempuri.org/PurchaseOrderSchema.xsd"
            targetNamespace="http://tempuri.org/PurchaseOrderSchema.xsd"
            elementFormDefault="qualified">
    <xsd:element name="PurchaseOrder" type="tns:PurchaseOrderType"/>
    <xsd:complexType name="PurchaseOrderType">
        <xsd:sequence>
            <xsd:element name="ShipTo" type="tns:USAddress" maxOccurs="2"/>
            <xsd:element name="BillTo" type="tns:USAddress"/>
        </xsd:sequence>
        <xsd:attribute name="OrderDate" type="xsd:date"/>
    </xsd:complexType>

    <xsd:complexType name="USAddress">
        <xsd:sequence>
            <xsd:element name="name"   type="xsd:string"/>
            <xsd:element name="street" type="xsd:string"/>
            <xsd:element name="city"   type="xsd:string"/>
            <xsd:element name="state"  type="xsd:string"/>
            <xsd:element name="zip"    type="xsd:integer"/>
        </xsd:sequence>
        <xsd:attribute name="country" type="xsd:NMTOKEN" fixed="US"/>
    </xsd:complexType>
</xsd:schema>