title: improved histograms for selectivity estimation of range predicates. authors: v poosala , y ioannidis , p haas , e shekita. venue: sigmod conference. year: 1996
title: improved histograms for selectivity estimation. authors: v poosala , y ioannidis , p haas , e shekita. venue: proc . of acm sigmod , montreal , canada ,. year: nan