I was not thinking about ordering, that is an important point. I focused mainly on finding the "row" belonging to a unique key. Maintaining/designing the btre

I was not thinking about ordering, that is an important point. I focused mainly on finding the "row" belonging to a unique key. Maintaining/designing the btree for innodb or postgres must be a nightmare with multithreading and the plethora of other features. I didn't want to dive into that rabbit hole.