title: maintenance of data cubes and summary tables in a warehouse. authors: i mumick , d quass , b mumick. venue: sigmod conference. year: 1997
title: ã cents â ? ¬ å?maintenance of data cubes and summary tables in a warehouse , ã cents â ? ¬ â ?. authors: is mumick , d quass , bs mumick. venue: proc . acm sigmod ,. year: nan