title: import/export xml for dbunit
body: <p>Ｈow can we easily import/export database data which dbunit could take in the following format?</p>
  
  <pre><code>&lt;dataset&gt;
     &lt;tablea cola="" colb="" /&gt;
     &lt;tableb colc="" cold="" /&gt;
  &lt;/dataset&gt;
  </code></pre>
  
  <p>I'd like to find a way to export the existing data from database for my unit test.</p>