[Pharo-users] Databases for Pharo that do not use FFI

Hello I have been tinkering with Pharo long enough now to contemplate writing a "serious" applications with it. An important consideration is databases. I have been looking at SQLite but realise since it works through FFI it probably blocks the VM whilst processing a query. Is this correct? VoyageMongo looks interesting. PostgreSQL is supported too. Do either of these work through FFI? Many thanks in advance.