I don't know if it exists for where you live, but you might be able to make use of a public information law (FOIA-like)
A buddy of mine just won one that finally set the precedent that database schemas are not security:
It helps you with the process of FOIA requests, and if/when granted, hosts the responses online publicly.
So you’ll win, but won’t get want you want- a way to view, understand, improve, and share.
So basically you're right - you'll get an unbuildable clusterfuck.