Observations

Sure it demonstrates in our inability to do cross-tier refactorings; you change the db, then you do some kind of transaction changing the code, and vice versa.

But we have to understand that this is so for all kinds of distributed data. The language changes in one end of the world, and a tier in the other end has to adapt, changing its language accordingly. Or disconnect. Or start a war. Or introduce United Nations that would keep all the definitions.