On B-tree Indices for Skewed Distributions

2004-06-01T00:00:00Z (GMT) by Christos Faloutsos H. V Jagadish
It is often the case that the set of values over which a B-Tree is constructed has a skewed distribution. We present a geometric growth technique to manage postings records in such cases, and show that the performance of such a technique is better than that of a straightforward fixed length postings list: It guarantees 1 disk access on searching, and it takes a fraction of the space that its competitor requires (55% to 66%, in our experiments).