conf/sigmod/81 Robert M. Curtice P. E. Jones Jr. Fundamentals of Data Element Definition. 49-55 1981 SIGMOD Conference db/conf/sigmod/sigmod81.html#CurticeJ81 SIGMOD81/P049.PDF http://doi.acm.org/10.1145/582318.582326 db/conf/sigmod/CurticeJ81.html ... ... ... journals/csur/Chamberlin76 ...