Date: Mon, 9 Nov 1998 10:49:36 +0100 (MET)
From: Fabio Mancinelli <mancinel@univaq.it>
To: David Jackson <cjamblue@smokies.amnix.com>
cc: pgsql-novice@hub.org, pgsql-sql@hub.org
Subject: Re: [SQL] Foreign Key ??
In-Reply-To: <Pine.BSF.3.96.981108094812.14737A-100000@smokies.amnix.com>
Message-ID: <Pine.GSO.3.96.981109104539.6800A-100000@brutus>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII

On Sun, 8 Nov 1998, David Jackson wrote:

> 	CONSTRAINT  NAME_FK FOREIGN KEY (client_name)
> 		REFERENCES client(client_name)
> );
> This results in FUNCTION NOT IMPLETEMENTED error.
>
Yes, that's true. There is no built-in referential integrity in
PostgresSQL. Anyway there are two "external" functions in the contrib/spi
directory which implement the referential integrity.
You can use these functions via triggers.

All the docs and the sources are in the contrib/spi dir in the source code
distribution (v6.4), I don't remember if they are also available in the
v6.3 source code distibution.

Bye.
 
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