<!-- $Id: geofile-dt.xsd,v 1.1 2001/09/13 20:19:05 drager Exp $ -->

<xsd:schema xmlns:xsd = "http://www.w3.org/2000/10/XMLSchema">

  <xsd:simpleType name="longitude">
    <xsd:restriction base="xsd:string">
      <xsd:pattern value="[0-9]{7}(E|W)"/>
    </xsd:restriction>
  </xsd:simpleType>

  <xsd:simpleType name="latitude">
    <xsd:restriction base="xsd:string">
      <xsd:pattern value="[0-9]{6}(N|S)"/>
    </xsd:restriction>
  </xsd:simpleType>

  <xsd:simpleType name="geocode">
    <xsd:restriction base="xsd:string">
      <xsd:length value="4" fixed="true"/>
    </xsd:restriction>
  </xsd:simpleType>

  <xsd:simpleType name="installationTypeCode">
    <xsd:restriction base="xsd:string">
      <xsd:length value="3" fixed="true"/>
    </xsd:restriction>
  </xsd:simpleType>

  <xsd:simpleType name="icaoCode">
    <xsd:restriction base="xsd:string">
      <xsd:length value="4" fixed="true"/>
    </xsd:restriction>
  </xsd:simpleType>

  <xsd:simpleType name="planCode">
    <xsd:restriction base="xsd:string">
      <xsd:length value="2" fixed="true"/>
    </xsd:restriction>
  </xsd:simpleType>

  <xsd:simpleType name="cc">
    <xsd:restriction base="xsd:string">
      <xsd:length value="2" fixed="true"/>
    </xsd:restriction>
  </xsd:simpleType>

</xsd:schema>