That's a great point, but I think the real issue there is that typical SQL DBMS's make it very hard to adjust the schema iteratively as you code. After all, if

That's a great point, but I think the real issue there is that typical SQL DBMS's make it very hard to adjust the schema iteratively as you code. After all, if you're writing in a language like Java, you don't know what your classes look like to start with, but coders manage that by adjusting and refactoring them as they work.