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Date: Mon, 20 Oct 2025 07:32:22 -0700 (PDT)
From: Rich Shepard <rshepard@appl-ecosys.com>
Reply-To: Rich Shepard <rshepard@appl-ecosys.com>
To: pgsql-general@lists.postgresql.org
Subject: Re: Arrays vs separate tables
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On Mon, 20 Oct 2025, Ron Johnson wrote:

> Multiple contacts at the same client company. If, for whatever reason, the
> phone number changes you've got to update X rows in your contacts table,
> whereas only one row needs to be updated when the schema meets 1NF. This
> eliminates update anomalies.

Ron,

Not an issue: the companies table has a 'phone' column while the people
table has both 'direct_phone' and 'cellphone' columns. And, the locations
table has a 'loc_phone' column because many industrial companies have
multiple facilities.

Regards,

Rich