title: semantics for update rule programs and implementations in a relational database management system. authors: louiqa raschid , jorge lobo. venue: acm trans . database syst .. year: 1996
title: the ores temporal database management system. authors: babis theodoulidis , aziz ait-braham , george andrianopoulos , jayant chaudhary , george karvelis , simon sou. venue: international conference on management of data. year: 1994