Storage Overhead of O-Trees, B-Trees and Prefix B-Trees: A Comparative Analysis

The O-tree is an indexing mechanism closely related to B-trees and Prefix B-trees. In this paper we derive the expected storage overhead of O-Trees under the standard Bernoulli model of randomness, compare the results with the expected overhead of B-trees and Prefix B-trees under the same conditions, and assess the expected relative improvements.