sdo/eclipselink.sdo.test/resource/org/eclipse/persistence/testing/sdo/helper/xmlhelper/CustomerWithExtension.xsd

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            xmlns="http://www.example.org"
            targetNamespace="http://www.example.org"
            elementFormDefault="unqualified"
            attributeFormDefault="unqualified"> 

	<xsd:element name="customer" type="customerType"/>

	<xsd:complexType name="addressType">
    		<xsd:sequence>
			<xsd:element name="permanent" type="xsd:boolean"/>			</xsd:sequence>
		<xsd:attribute name="street" type="xsd:string"/>
		<xsd:attribute name="city" type="xsd:string"/>
	</xsd:complexType>
	
	<xsd:complexType name="usAddressType">
		<xsd:complexContent>
	    		<xsd:extension base="addressType">
				<xsd:attribute name="zip" type="xsd:int"/>
			</xsd:extension>

		</xsd:complexContent>
	</xsd:complexType>
	
	<xsd:complexType name="cdnAddressType">
		<xsd:complexContent>
    			<xsd:extension base="addressType">
				<xsd:attribute name="postalcode" type="xsd:string"/>
			</xsd:extension>
		</xsd:complexContent>
	</xsd:complexType>
		
	<xsd:complexType name="testType">
		<xsd:simpleContent>
    			<xsd:extension base="xsd:string">
				<xsd:attribute name="tester" type="xsd:int"/>
			</xsd:extension>
		</xsd:simpleContent>
	</xsd:complexType>
		
	<xsd:complexType name="customerType">
	 	<xsd:sequence>
      			<xsd:element name="firstName" type="xsd:string"/>	
			<xsd:element name="lastName" type="xsd:string"/>				<xsd:element name="address" type="addressType"/>			</xsd:sequence>
		<xsd:attribute name="customerID" type="xsd:int"/>
		<xsd:attribute name="sin" type="xsd:string"/>	
	</xsd:complexType>

</xsd:schema>