[nablaone]

> But then again: Is it even a good idea to access the same database from two codebases at all?

It's an integration pattern. It works in some contexts.

[ants_a]

If its treated correctly as a set of SQL language API-s with clear ownership and explicitly defined public/private parts. There is a reason why its often considered an anti-pattern, and it is a general lack of discipline in maintaining stable semantics and separation of responsibilities.