File: Data.xml
<?xml version="1.0"?>
<Party xmlns="http://www.wbex.ru"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.wbex.ru Schema.xsd">
<names>
<Name><First>Peter</First><Last>Brown</Last></Name>
<Name><First>Peter</First><Last>Costello</Last></Name>
</names>
</Party>
File: Schema.xsd
<?xml version="1.0"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.wbex.ru"
xmlns="http://www.wbex.ru"
xmlns:reunion="http://www.wbex.ru"
elementFormDefault="qualified">
<xsd:element name="Party">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="names">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="Name" minOccurs="0" maxOccurs="unbounded">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="First" type="xsd:string"/>
<xsd:element name="Last" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
</xsd:sequence>
</xsd:complexType>
<xsd:key name="PK">
<xsd:selector xpath="reunion:names/reunion:Name"/>
<xsd:field xpath="reunion:First"/>
<xsd:field xpath="reunion:Last"/>
</xsd:key>
</xsd:element>
</xsd:schema>