I still don't understand why people believe that abstracting away something as important as your data store is a good idea. They quickly run into performance problems that are quite difficult to fix.

It's funny that the same developers that try to avoid vendor lock-in don't realize they've locked themselves into an ORM forever.

Plus, SQL isn't that hard. And as a backend person, you should be able to visualize your data model anyway. A SQL datatbase is just a bunch of planes, for the most part, and the queries are how you intersect them...more or less.