David, in case it isn't already obvious, if you are new to OpenACS you
absolutely do
not want to even think about porting it to
Frontbase! That would be a major undertaking, probably not something
you want to even consider without a very good reason. The supported
databases for OpenACS 4 are Oracle and PostgreSQL.
However, if you have legacy stuff using Frontbase and want to make
that stuff work with OpenACS in some fashion, if you have or can write
an AOLserver database driver for Frontbase, then you could probably
make that work. I don't think any such driver exists for FrontBase,
but if Frontbase supports ODBC, you might be able to use one of the
AOLserver ODBC drivers instead. But, since it doesn't sound like you
have any large amount of legacy code requiring Frontbase, you'd
probably be better served by simply switching to Postgres ASAP. (And I know nothing about Frontbase, but I'd bet that Postgres is a better
rdbms, anyway.)