constraint/restrict

From: Olaf Marc Zanger <olaf(dot)zanger(at)soli-con(dot)com>
To: PgSQL-SQL <pgsql-sql(at)postgresql(dot)org>
Subject: constraint/restrict
Date: 2001-02-14 08:02:54
Message-ID: 01021409023603.01358@sino
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-sql

hi there,

with two tables i want to make some constraint-restrictions

create table address ( id serial, country_id int4, ....);
and
create table country (id serial, ...);

to make sure that now country-row is deleted if there is still a country_id
in address table.

e.g.

address: 1, 2, ...
country: 2, ...

now country wouldn't be allowed to be deleted.

how to do that?

thanks fo help

olaf
--
soli-con Engineering Zanger, Dipl.-Ing. (FH) Olaf Marc Zanger
Lorrainestrasse 23, 3013 Bern / Switzerland
fon:+41-31-332 9782, mob:+41-76-572 9782
mailto:olaf(dot)zanger(at)soli-con(dot)com, http://www.soli-con.com

Responses

Browse pgsql-sql by date

  From Date Subject
Next Message Richard Huxton 2001-02-14 11:32:04 Re: constraint/restrict
Previous Message Peter Eisentraut 2001-02-13 17:04:37 Re: COPY isn't working right for me