| From: | Mario Weilguni <Mario(dot)Weilguni(at)kpnqwest(dot)com> |
|---|---|
| To: | Marc SCHAEFER <schaefer(at)alphanet(dot)ch>, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: foreign keys constraints, depending on each other |
| Date: | 2001-06-11 09:47:34 |
| Message-ID: | 200106110943.f5B9hufn015828@relay2.austria.eu.net |
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| Lists: | pgsql-general |
Am Montag, 11. Juni 2001 10:25 schrieb Marc SCHAEFER:
> I would remove the father and mother references, and add a
> is_married
> relation; as a table, with a UNIQUE(father_id), UNIQUE(mother_id)
> constraint (a person can be only married once).
Is not true, at least not in some arabic countries.
--
===================================================
Mario Weilguni KPNQwest Austria GmbH
Senior Engineer Web Solutions Nikolaiplatz 4
tel: +43-316-813824 8020 graz, austria
fax: +43-316-813824-26 http://www.kpnqwest.at
e-mail: mario(dot)weilguni(at)kpnqwest(dot)com
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