Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1m8ubV-0008HW-Rd for pgsql-docs@arkaria.postgresql.org; Thu, 29 Jul 2021 01:12:53 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1m8ubU-0000ui-PD for pgsql-docs@arkaria.postgresql.org; Thu, 29 Jul 2021 01:12:52 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1m8ubU-0000ua-JK for pgsql-docs@lists.postgresql.org; Thu, 29 Jul 2021 01:12:52 +0000 Received: from momjian.us ([72.94.173.45]) by magus.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1m8ubN-0005lx-TR for pgsql-docs@lists.postgresql.org; Thu, 29 Jul 2021 01:12:52 +0000 Received: from bruce by momjian.us with local (Exim 4.92) (envelope-from ) id 1m8ubL-00058I-9Y; Wed, 28 Jul 2021 21:12:43 -0400 Date: Wed, 28 Jul 2021 21:12:43 -0400 From: Bruce Momjian To: Doug Tracy Cc: pgsql-docs@lists.postgresql.org Subject: Re: Logical error Message-ID: <20210729011243.GC9600@momjian.us> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.10.1 (2018-07-13) List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk On Fri, Jul 16, 2021 at 02:18:11PM -0500, Doug Tracy wrote: >   > > From the URL https://www.postgresql.org/files/documentation/pdf/12/ > postgresql-12-A4.pdf > > Page xxxi > > PostgreSQL is an object-relational database management system (ORDBMS) based on > POSTGRES, Version 4.21 > > Page 7 > > 2.2. Concepts > > PostgreSQL is a relational database management system (RDBMS) Uh, the first mention is talking about the object-relational aspects of Postgres, while the second is talking about the pure relational parts --- not sure if this can be improved. -- Bruce Momjian https://momjian.us EDB https://enterprisedb.com If only the physical world exists, free will is an illusion.