You don’t have to use migrations, it’s an optional feature. It works equally well to just generate entities from an existing database, that is migrated/set-up in any other way (as long as the schema is not crazily complex).

Not my project/not affiliate but Evolve is wonderful for handling db migrations

Haven't heard of Evolve before, but used DbUp in the past with success too: https://dbup.readthedocs.io/en/latest/