Dave
Thanks for the response - I was thinking along the same lines - we
have an application that processes messages from clients and
rebrodcasts them - to synchronize certain events.

> My own application handles airport checkins. When a passenger checks
> in, a message is sent to other connections with the flight ID and
> passenger ID.

So, an event at one client (Passenger Check in) is broadcast to all
clients - this does not necessarily depend on POST_EVENT from the
database - is that right?
If you have several clients with Forms that need updating, does this
not result in the database server receiving several requests at the
same time - how do you get around that?