title: sampling-based estimation of the number of distinct values of an attribute. authors: p haas , j naughton , s seshadri , l stokes. venue: vldb. year: 1995
title: sampling-based estimation of thenumberofdistinct valuesofanattribute. authors: pj haas , jf naughton , s seshadri , l stokes. venue: inproc . of vldb , pages311322 , zurich , switzerland , september ,. year: nan