1. In a database management system for storing data of a plurality of dimensions and processing aggregation requests concerning said data, a data display method for displaying aggregate patterns, said data display method comprising the steps of: displaying coordinate axes respectively assigned to said plurality of dimensions; displaying a scale on each axis, the scale corresponding to aggregation levels of the assigned dimension, the scale being arranged either in an ascending order or in descending order of the aggregation levels; determining one aggregation level on each axis according to the aggregation requests to be processed; and connecting the determined aggregation levels on the respective axes with lines to display the aggregate pattern as a polygon.