[xsl] various XSD format

["Bru, Pierre" <Pierre.Bru@xxxxxxxxxxxx>]

hi,

I'm used to read XSL file looking like

  <xsd:element name="EO_Characteristics">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element ref="EO_REFERENCE" minOccurs="1" maxOccurs="1"/>
        <xsd:element ref="EO_Originator" minOccurs="1" maxOccurs="1"/>
        <xsd:element ref="Product_Addressee" minOccurs="1"
maxOccurs="1"/>
        <xsd:element ref="SCHEDULED_DATE" minOccurs="0" maxOccurs="1"/>
        <xsd:element ref="COMMENT_TEXT" minOccurs="0" maxOccurs="1"/>
      </xsd:sequence>
    </xsd:complexType>
  </xsd:element>

but I receltly when thru one looking like

  <elementType name="EO_Characteristics">
    <sequence>
      <elementTypeRef name="EO_REFERENCE" minOccur="1" maxOccur="1"/>
      <elementTypeRef name="EO_Originator" minOccur="1" maxOccur="1"/>
      <elementTypeRef name="Product_Addressee" minOccur="1"
maxOccur="1"/>
      <elementTypeRef name="SCHEDULED_DATE" minOccur="0" maxOccur="1"/>
      <elementTypeRef name="COMMENT_TEXT" minOccur="0" maxOccur="1"/>
    </sequence>
  </elementType>

what is the diffence between these two formats ? is there some known XSL
to go from the second to the first ?

TIA,
Pierre.