Customer.xsd

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema ">

<xsd:element name="CUSTOMERDATA" type="cdata"/>

<xsd:complexType name="cdata">

<xsd:sequence>

<xsd:element name="CUSTOMER" type="custtype"/>

</xsd:sequence>

</xsd:complextype>

<xsd:complexType name="custtype">

<xsd:sequence>

<xsd:element name="FIRSTNAME" type="xsd:string"/>

<xsd:element name="LASTNAME" type="xsd:string"/>

<xsd:element name="CONTACTINFO" type="contacttype" />

</xsd:sequence>

<xsd:attribute name="CUSTOMERID" type="xsd:string" use="required"/>

</xsd:complextype>

<xsd:complexType name="contacttype">

<xsd:choice>

<xsd:element name="RESIDENCE" type="addtype" />

<xsd:element name="OFFICE" type="addtype" />

</xsd:choice>

</xsd:complextype>

<xsd:complextype name="addtype">

<xsd:group ref="ADDPHONE" />

</xsd:complextype>

<xsd:group name="ADDPHONE">

<xsd:sequence>

<xsd:element name="ADDRESS" type="xsd:string"/>

<xsd:element name="PHONE" type="xsd:string"/>

</xsd:sequence>

</xsd:group>

</xsd:schema >