No - you can do everything in Community you can in Pro, the main paid edition. You can certainly use databases. We generally have a higher SKU for remote databases.
that is ridiculous in 2020
and you only get that with the "enterprise edition"
"professional" only gets you embeded and localhost DB ?!?
I still have my old separate Firedac licence for an old project i support, but anybody new coming to this mess will just have a good lough and move on.
You can use open source libraries like Zeoslib (https://zeoslib.sourceforge.io/) or mORMot (https://synopse.info/fossil/wiki?name=SQLite3+Framework).