Exemple de séquence, choix et groupe

<xsd:complexType name="PurchaseOrderType">
 <xsd:sequence>
  <xsd:choice>
   <xsd:group   ref="shipAndBill"/>
   <xsd:element name="singleUSAddress"
                type="USAddress"/>
  </xsd:choice>
  <xsd:element ref="comment" minOccurs="0"/>
  <xsd:element name="items"  type="Items"/>
 </xsd:sequence>
 <xsd:attribute name="orderDate" type="xsd:date"/>
</xsd:complexType>

<xsd:group name="shipAndBill">
  <xsd:sequence>
    <xsd:element name="shipTo" type="USAddress"/>
    <xsd:element name="billTo" type="USAddress"/>
  </xsd:sequence>
</xsd:group>