<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
           xmlns:x="http://www.w3.org/XML/1998/namespace"
           xmlns="http://purl.org/dc/elements/1.1/"
           targetNamespace="http://purl.org/dc/elements/1.1/"
           elementFormDefault="qualified"
           attributeFormDefault="unqualified">

  <xs:annotation>
    <xs:documentation xml:lang="en">
      Simple DC XML Schema, 2002-03-12
      by Pete Johnston (p.johnston@ukoln.ac.uk),
      Carl Lagoze (lagoze@cs.cornell.edu), Andy Powell (a.powell@ukoln.ac.uk),
      Herbert Van de Sompel (hvdsomp@yahoo.com).
      This schema defines terms for Simple Dublin Core, i.e. the 15
      elements from the http://purl.org/dc/elements/1.1/ namespace, with
      no use of encoding schemes or element refinements.
      Default content type for all elements is xs:string with xml:lang
      attribute available.
    </xs:documentation>
    <xs:appinfo>
      <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
      <rdf:Description rdf:about="">  
      <dc:title>Simple DC XML Schema</dc:title>
      <dc:date>2002-03-12</dc:date>
      <dc:description>This schema defines terms for Simple Dublin Core, i.e. the 15
      elements from the http://purl.org/dc/elements/1.1/ namespace, with
      no use of encoding schemes or element refinements.
      Default content type for all elements is xs:string with xml:lang
      attribute available.</dc:description>
      <dc:publisher>The Dublin Core Metadata Initiative</dc:publisher> 
      <dc:creator>Pete Johnston (p.johnston@ukoln.ac.uk)</dc:creator>
      <dc:creator>Carl Lagoze (lagoze@cs.cornell.edu)</dc:creator>
      <dc:creator>Andy Powell (a.powell@ukoln.ac.uk)</dc:creator>
      <dc:creator>Herbert Van de Sompel (hvdsomp@yahoo.com)</dc:creator>
      <dc:relation rdf:resource="http://purl.org/dc/elements/1.1/"/>
      </rdf:Description>
      </rdf:RDF>
  </xs:appinfo>
  </xs:annotation>

  <xs:import namespace="http://www.w3.org/XML/1998/namespace"
             schemaLocation="http://www.w3.org/2001/03/xml.xsd">
  </xs:import>

  <xs:element name="title" type="elementType"/>
  <xs:element name="creator" type="elementType"/>
  <xs:element name="subject" type="elementType"/>
  <xs:element name="description" type="elementType"/>
  <xs:element name="publisher" type="elementType"/>
  <xs:element name="contributor" type="elementType"/>
  <xs:element name="date" type="elementType"/>
  <xs:element name="type" type="elementType"/>
  <xs:element name="format" type="elementType"/>
  <xs:element name="identifier" type="elementType"/>
  <xs:element name="source" type="elementType"/>
  <xs:element name="language" type="elementType"/>
  <xs:element name="relation" type="elementType"/>
  <xs:element name="coverage" type="elementType"/>
  <xs:element name="rights" type="elementType"/>

  <xs:group name="elementsGroup">
  <xs:sequence>
    <xs:choice minOccurs="0" maxOccurs="unbounded">
      <xs:element ref="title"/>
      <xs:element ref="creator"/>
      <xs:element ref="subject"/>
      <xs:element ref="description"/>
      <xs:element ref="publisher"/>
      <xs:element ref="contributor"/>
      <xs:element ref="date"/>
      <xs:element ref="type"/>
      <xs:element ref="format"/>
      <xs:element ref="identifier"/>
      <xs:element ref="source"/>
      <xs:element ref="language"/>
      <xs:element ref="relation"/>
      <xs:element ref="coverage"/>
      <xs:element ref="rights"/>
    </xs:choice>
    </xs:sequence>
  </xs:group>

  <xs:complexType name="elementType">
    <xs:simpleContent>
      <xs:extension base="xs:string">
        <xs:attribute ref="x:lang" use="optional"/>
      </xs:extension>
    </xs:simpleContent>
  </xs:complexType>

</xs:schema>