Can a database notify all clients when something changes?

From: Satan Devil <very709394bad(at)yahoo(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Can a database notify all clients when something changes?
Date: 2004-12-15 23:37:05
Message-ID: 20041215233705.27469.qmail@web54409.mail.yahoo.com
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Can a database notify all clients when something
changes and send the changes to the clients?

Let me explain.
Suppose that there are 3 workstations connected to a
central database. When Workstation A changes
something, Workstation B and C must get the changes.

So, can any database do that? If it does, what is
called?

Is there a library for that?

Or Do I have to write 1 myself.( I hope not ! ).

thanx!


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