Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sp5ct-00GQXu-4W for pgsql-general@arkaria.postgresql.org; Fri, 13 Sep 2024 12:42:16 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.94.2) (envelope-from ) id 1sp5cs-002PH6-OU for pgsql-general@arkaria.postgresql.org; Fri, 13 Sep 2024 12:42:14 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sp5cs-002PGy-E5 for pgsql-general@lists.postgresql.org; Fri, 13 Sep 2024 12:42:14 +0000 Received: from mail.appl-ecosys.com ([50.126.108.78]) by magus.postgresql.org with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1sp5co-000zNh-TE for pgsql-general@postgresql.org; Fri, 13 Sep 2024 12:42:13 +0000 Received: from salmo.appl-ecosys.com (salmo.appl-ecosys.com [192.168.55.1]) by mail.appl-ecosys.com (Postfix) with ESMTP id 624652A14D6 for ; Fri, 13 Sep 2024 05:42:10 -0700 (PDT) Date: Fri, 13 Sep 2024 05:42:10 -0700 (PDT) From: Rich Shepard To: pgsql-general Subject: Re: DDL issue In-Reply-To: Message-ID: References: <91bda8-3bdb-d93-6c17-41a03a3de27a@appl-ecosys.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII; format=flowed List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk On Fri, 13 Sep 2024, Tony Shelver wrote: > Or if you want to get even more flexible, where a dairy could have more > than one owner as well as one owner having more than one dairy, you could > create an intersection / relationship table. > > Something like > > -- Create people table (one entry per person) > CREATE TABLE people_dairy_map ( pdm_id SERIAL PRIMARY KEY, > first_name VARCHAR(100), > last_name VARCHAR(100), > email VARCHAR(100) UNIQUE ); > phone_number VARCHAR(15), > person_id INT REFERENCES people(person_id) > dairy_id INT REFERENCES dairies(dairy_id); Thanks, Tony. Regards, Rich