title: storing and querying ordered xml using a relational database system sigmod conference. authors: i tatarinov , s viglas , k beyer , j shanmugasundaram , e shekita , c zhang. venue: nan. year: 2002.0
title: formal syntax and semantics of a reconstructed relational database system d jonsson 1992.0. authors: nan. venue: sigmod record ,. year: nan