In my research project, I need a DBMS that supports XML storage and retrieval, and provides ECA rule support. Currently, I am using Oracle 10g. However, I am interested in using Open Sources DB.
I am looking for a document addressing the XML support in the current Postgresql release (8.1.4). I would like to know - whether Postgresql DB could be used as XML Repository or not? - Whether Postgresql DB support the XQuery or SQL/XML or not? - if Yes, could I write triggers combined with SQL/XML statement or XQuery statement?