%A Edward Sciore %T Improving database schemes by adding attributes %R Technical Report #82/035 %I Computer Science Department State University of New York %C Stony Brook, New York %D March 1982 %A David Rozenshtein %T Implementing null values in relations %R Technical Report #82-039 %I Computer Science Department State University of New York %C Stony Brook, New York %D May 1982 %A Edward Sciore %A David Scott Warren %T Towards an integrated database-Prolog system %R Technical Report %I Computer Science Department State University of New York %C Stony Brook, New York