constraint/restrict - Mailing list pgsql-sql

From Olaf Marc Zanger
Subject constraint/restrict
Date
Msg-id 01021409023603.01358@sino
Whole thread Raw
Responses Re: constraint/restrict
List 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.zanger@soli-con.com, http://www.soli-con.com


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