Since the middle tier is doing the database access on behalf of
multiple thin clients, do we lose the ability to associate a
particular database user ID with a particular human user? This
would seem to be a problem if you want to grant different access
rights to different groups of users at the database level.

Yes, if you want to use one connection to the database for all

clients. If you want, you can have the clients login to the
database. To do this, create an automation method on the
RemoteDataModule that takes the user name and password and use
that to login to the database. Also, drop a TSession on your
RemoteDataModule and set it's AutoSessionName property to True.

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