title: Postgres XML datatype
body: <p>What are the benefits of using the "xml" datatype versus storing the xml content inside a "text" datatype?</p>
  
  <p>Am I able to query by some specific xml attribute or element?</p>
  
  <p>What about indexing and query performance?</p>
  
  <p>Besides the postgresql manual what other online sources can you point me to?</p>