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foreign key

From: "Arindam Guha" <arindam_guha(at)hotmail(dot)com>
To: pgsql-sql(at)postgresql(dot)org
Subject: foreign key
Date: 2000-04-12 19:03:51
Message-ID: 20000412230351.60719.qmail@hotmail.com (view raw or flat)
Thread:
Lists: pgsql-sql
How to avoid  updation anomaly like this :

While trying to update in the parent table it says child record exists
and
while trying to update in the child table it says parent record exists

I am trying to update the foreign key column in both the tables ?

Also how to delete a foreign key constraint ?

Thanks
Arindam
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