Re: triggers

kailash(dot)vyas(at)gmail(dot)com (Kailash Vyas) writes:
> hi
> I have a query regarding triggers.
> On INSERT, UPDATE, DELETE I want to fire a trigger to relect it to another database on postgres sever.
> how can I do this operation.
> Thanks in advance,
> Kailash Vyas

If you wish the trigger to result in some action taking place on
another database, then there are two major methodologies available:

1. The trigger could RAISE an event.

A LISTENing daemon would see that event, and do something in the
other database.

2. The trigger could write data into a replicated table.

The replication system (possibly Slony-I?) would then copy
the replicable data to the other database.

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