title: semantic integrity support in sql : 1999 and commercial ( object - ) relational database management systems. authors: c tќrker , m gertz. venue: vldb j.. year: 2001
title: xml and relational database management systems : the inside story. authors: m rys , d chamberlin , d florescu. venue: proceedings of the 2005 acm sigmod international conference & hellip ; ,. year: 2005.0