IBM developerWorks has published the latest article in my managing XML Data series, "eXist -- an open source native XML database". This is a quick intro to eXist that demonstrates setting up a sample database and querying it with XQuery using both the GUI tools and the RESTful interface. My overall impression of eXist is that it's got potential, but that it's not ready for prime time yet. In the future, I hope to write some similar articles covering other products like dbXML 2.0, Berkeley dbXML, and Mark/Logic to see how they compare.