I think that you'd have to also implement indexes to make that work, just like SQL databases do. Even with SQL, I ran into plenty of cases that indexes were ne

I think that you'd have to also implement indexes to make that work, just like SQL databases do. Even with SQL, I ran into plenty of cases that indexes were necessary for decent speed. Flatfiles would just amplify that. And, if you're trying to use the VCS to do merges, the indexes will constantly get messed up, so they'd have to be reindexed after every merge to be sure they were legit, and it still wouldn't ensure uniqueness... Ouch.