Triggers. Check the contrib directory from the distribution for refint.
> -----Original Message-----
> From: Esteban Chiner Sanz [SMTP:echiner@tissat.es]
> Sent: Thursday, July 15, 1999 12:14 PM
> To: pgsql-sql@postgreSQL.org
> Subject: [SQL] Foreign keys
>
> I know there are no foreign keys in Postgres but, what could be the
> best/most efficient way to simulate them?
> Thank you,
>
> Esteban
>
> ------------------------------------------------------------
> Esteban Chiner Sanz mailto (work): echiner@tissat.es
> TISSAT mailto (home): echiner@abonados.cplus.es
> Av. Aragon, 30, 5ª planta Phone: 96 393 9950
> Valencia (SPAIN)
>
>