Unfortunately I checked the pricing:
For the cost of the professional version you can buy the all products pack from Jetbrains, with the full version of all their IDEs, including their database tool, and have a thousand Euros left over. Assuming that you aren't buying their personal pack, which is quite a lot cheaper.
The professional version of Delphi does not support database connections, for that you need the Enterprise version at twice the price.
Basically purchasing Delphi or using Delphi makes no sense today, unless you are already locked into the ecosystem.