web-server/data/release/demo/WFS_transactionUpdate.xml

 <!--       YOU PROBABLY DO NOT WANT TO RUN THIS QUERY SINCE 
       IT WILL MODIFY YOUR SOURCE DATA FILES

      This will update the type field for the tasmania_roads dataset.
      
   -->


<wfs:Transaction service="WFS" version="1.0.0"
  xmlns:topp="http://www.openplans.org/topp"
  xmlns:ogc="http://www.opengis.net/ogc"
  xmlns:wfs="http://www.opengis.net/wfs">
  <wfs:Update typeName="topp:tasmania_roads">
    <wfs:Property>
      <wfs:Name>TYPE</wfs:Name>
      <wfs:Value>street</wfs:Value>
    </wfs:Property>
    <ogc:Filter>
      <ogc:FeatureId fid="tasmania_roads.1"/>
    </ogc:Filter>
  </wfs:Update>
</wfs:Transaction>