Peter,
> You can probably lift out the complete calendar functionality from an
> existing groupware solution, say, www.egroupware.org. I'm not sure
> whether it's practical to do the calendar things in the database, since
> you will also need a significant amount of intelligence in the client
> to display reasonable calendar graphics, for instance.
But all of the appointments, holidays, etc can and should be stored in the
database, and by using function programming one can automate generating all
of the raw data for the calendar graphics. We do this with our legal
calendaring app.
--
-Josh Berkus
Aglio Database Solutions
San Francisco