Journals Proceedings

Abstract

Very often computation of multiple group -bys are done by OLAP applications. Many of the OLAP applications use cube operator. The cube operator requires computing group-bys on all possible combinations of list of attributes. If multiple copies of the same data are stored at different data bases then the OLAP applications evaluate same data cubes may number of times. This increases the cost of evaluation and performance time. Here we present a CROME based method of computing the data cubes. Data cubes with same CROME are identified as duplicates and can be evaluated once.