This is inaccurate.
The pro license compiles to Android, IOS, Windows, and OSX. You can connect to SQLite and IBlite. Additionally, you can connect to MySQL or other DBs on localhost for example. Lastly, you can connect to remote databases with third party solutions (though against the spirit of the license).
The enterprise license allows connecting to over 20 different remote databases.
The architect license (the most expensive) has additional features not related to connecting to remote databases.