Se> A type of data warehouSe deSigned primarily to addreSS a Specific function or department' S needS, aS oppoSed to a data warehouSe which iS traditionally meant to addreSS the needS of the organiSation from an enterpriSe perSpective. In addition, a data mart often uSeSaggregation or SummariSation of the data to enhance query performance. However, it iS important to maintain the ability to acceSS the underlying baSe data to enable drill-down analySiS aS neceSSary. (1998-04-24)