However, in the reverse way, the migrations defining the models (as in Rails) often leads to mismatches as well. There's no easy solution to this problem, alas.

However, in the reverse way, the migrations defining the models (as in Rails) often leads to mismatches as well. There's no easy solution to this problem, alas. When model-based migrations work, they work really well, and help reinforce code schema/database schema being entirely in sync.