Yes. Most CRUD apps are like this almost by definition.
It's more common for domain logic to be fairly simple and smeared across multiple systems and languages, though - e.g. some is in SQL, some is in a separate microservices, some is in module A and some is in module B and the bugs that are almost universally centered around the interactions between these systems rather than what the units do individually.
In either case unit tests end up being mimetic: assert derp == derp.
It's more common for domain logic to be fairly simple and smeared across multiple systems and languages, though - e.g. some is in SQL, some is in a separate microservices, some is in module A and some is in module B and the bugs that are almost universally centered around the interactions between these systems rather than what the units do individually.
In either case unit tests end up being mimetic: assert derp == derp.