Read data for external database

We are very excited to be able to process the data we generate. For recommendations, for example. For this we want to use an external database (sql). However, we wonder if it is easy to connect this database to Bubble. The database should only receive data if something changes in Bubble. At first we don’t want to write back.

For your information: We have already built a platform on Bubble, which is already in use. Therefore a complete reconstruction of the platform would be unsuitable,

Thank you very much