Dmitry,

> In Vulcan, we may have a few engine providers within a single
> installation.

I have always wondered about the real need for such an
installation/setup.

I would have said that you should be able to have multiple engines
installed on a single server, each assigned its own IP port. Therefore,
the 'correct' engine selection would be arbitrated by the presence of
the appropriate port number in the connection string.

To have one dispatcher with all the configuration details for all
engines makes the notion of developers being able to easily deploy
products to end-users might have multiple products from separate
developers difficult to understand.

The current Vulcan approach, IMHO, is only suitable for selected
installs where there is someone (sysdba) responsible for the management
of the configuration.


Sean