trigger, transactions, eek

Hi,
I'm trying to find some info on how to safely maintain 2 separate
databases.

Basically, an INSERT or UPDATE will happen the master db, and this should
call a trigger to a cpp app that will exec the appropriate query on the
second db.

I need to be able to check that all is when with both inserts, so would
expect (wrongly probably) to need to use a transaction within a procedure,
and the app that the trigger calls, to also do a transaction of some kind.
This seems, after some browsing, to either be the wrong thing to do, or
prohibited by the fact that the trigger will not be called until after the
transaction
is commited.

If anyone has any pointers on how i should approach this, or whatever, i
would be greatful.

Cheers,
Chris

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