Hi! As far as I understand, one can simulate updateable views in PostgreSQL by providing appropriate query rewrite rules. Is there any tool to automatically create these rules for a given set of table and view definitions? Kind regards, Markus -- Markus Grabner - Computer Graphics and Vision Graz University of Technology, Inffeldgasse 16a/II, 8010 Graz, Austria Phone: +43/316/873-5041, Fax: +43/316/873-5050 WWW: http://www.icg.tu-graz.ac.at/Members/grabner