Dimitry, > Thus another alternative to increase expressive power of query language is > to develop its declarative (i.e. nonprocedural) part. And here we come to > deductive database (DDB) with its logic language Datalog.
You may want to look at the work of Rada Chirkova, who has already written a PostgreSQL-parse-tree-to-DataLog converter: http://research.csc.ncsu.edu/selftune/Report_031005.pdf -- Josh Berkus Aglio Database Solutions San Francisco ---------------------------(end of broadcast)--------------------------- TIP 2: you can get off all lists at once with the unregister command (send "unregister YourEmailAddressHere" to [EMAIL PROTECTED])