The xsd:all Group

• Each element in the xsd:all group must occur zero or once; that is minOccurs and maxOccurs must each be 0 or 1

• The xsd:all group must be the top level element of its type

• The xsd:all group may contain only individual element declarations; no choice or sequences

<xsd:schema xmlns:xsd="http://www.w3.org/2000/10/XMLSchema">
 
  <xsd:element name="SONG" type="SongType"/>

  <xsd:complexType name="PersonType">
    <xsd:element name="NAME">
      <xsd:complexType>
        <xsd:all>
          <xsd:element name="GIVEN"  type="xsd:string" 
            minOccurs="1" maxOccurs="1"/>
          <xsd:element name="FAMILY" type="xsd:string" 
            minOccurs="1" maxOccurs="1"/> 
        </xsd:all>     
      </xsd:complexType>
    </xsd:element>
  </xsd:complexType>

  <xsd:complexType name="SongType">
      <xsd:element name="TITLE" type="xsd:string" 
        minOccurs="1" maxOccurs="1"/>
      <xsd:element name="PHOTO" type="PhotoType"  
        minOccurs="0" maxOccurs="1"/>
      <xsd:element name="COMPOSER" type="PersonType" 
        minOccurs="1" maxOccurs="unbounded"/>
      <xsd:element name="PRODUCER" type="PersonType" 
        minOccurs="0" maxOccurs="unbounded"/>
      <xsd:element name="PUBLISHER" type="xsd:string" 
        minOccurs="0" maxOccurs="1"/>
  
      <xsd:element name="YEAR" type="xsd:year" 
        minOccurs="1" maxOccurs="1"/>

      <xsd:element name="ARTIST" type="xsd:string" 
        minOccurs="1" maxOccurs="unbounded"/>
  </xsd:complexType>

  <!-- An empty element -->
  <xsd:complexType name="PhotoType" content="empty">
    <xsd:complexContent>
       <xsd:restriction base="xsd:anyType">
         <xsd:attribute name="ALT"    type="xsd:string"/>
         <xsd:attribute name="WIDTH"  type="xsd:nonNegativeInteger"/>
         <xsd:attribute name="HEIGHT" type="xsd:nonNegativeInteger"/> 
      </xsd:restriction>
    </xsd:complexContent>
  </xsd:complexType>
  
</xsd:schema>