Practical PostgreSQLEdited by Andrew Brookins Michael Holloway Copyright © 2001-2002 by Commandprompt, Inc Copyright (c) 2001 by Command Prompt, Inc. This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). 'Distribution of substantively modified versions of thi
