B-Trees: An Overview

B-Trees are built upward from the bottom rather than downward from the top, thus addressing the problems of Paged Trees: with B-Trees, we allow the root to emerge rather than set it up and then find ways to change it.

B-Trees are multi-level indexes that solve the problem of linear cost of insertion and deletion.

B-Trees are built upward from the bottom rather than downward from the top, thus addressing the problems of Paged Trees: with B-Trees, we allow the root to emerge rather than set it up and then find ways to change it.