True enough, but there is a reason why OpenLDAP's performance is atrocious when run with an SQL back-end.
My own viewpoint is that there are cases where the relational model really offers very little of benefit and a lot in terms of cost, but that these are far more narrower than the NoSQL guys suggest. I see NoSQL at its best being a niche tool.
Remember with NoSQL, there's one answer when your customer say "can I tweak this report?" NoSQL? Answer is "No!" of course!
My own viewpoint is that there are cases where the relational model really offers very little of benefit and a lot in terms of cost, but that these are far more narrower than the NoSQL guys suggest. I see NoSQL at its best being a niche tool.
Remember with NoSQL, there's one answer when your customer say "can I tweak this report?" NoSQL? Answer is "No!" of course!