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→PostgreSQL Specifications
: 1- XA JDBC driver for Postgre (needed for NexJ Express Model)
::As XA Data Source, as for what they mean: XA are for distributed transactions (as per the Open Group specificitions) and non-XA are not (transactions must be single-database). [http://www.theserverside.com/discussions/thread.tss?thread_id=21385]
:: Hierarchy for package [http://jdbc.postgresql.org/development/privateapi/org/postgresql/xa/package-tree.html org.postgresql.xa]
:: [http://jdbc.postgresql.org/todo.html Bugs]