title: a normal form for precisely characterizing redundancy in nested relations. authors: yiu-kai ng , david w. embley , wai yin mok. venue: acm trans . database syst .. year: 1996
title: a normal form for precisely characterizing redundancy in nested relations. authors: wai yin mok , yiu-kai ng , david w. embley. venue: acm transactions on database systems ( tods ). year: 1996