You're thinking of abstraction as a way to hide low-level details that aren't pertinent to your thinking about how to solve a problem. If you think of abstract

You're thinking of abstraction as a way to hide low-level details that aren't pertinent to your thinking about how to solve a problem. If you think of abstraction as a way to hide anything a Blub programmer doesn't want to think about, then abstracting away the relational model makes sense.