title: metu object-oriented dbms. authors: a dogac , i arpinar , c evrendilek , c ozkan , i altintas , i durusoy , m altinel , t okay , y saygin. venue: sigmod conference. year: 1994
title: sentinel : an object-oriented dbms with event-based rules. authors: s chakravarthy. venue: acm sigmod record ,. year: 1997.0