title: a general techniques for querying xml documents using a relational database system. authors: j shanmugasundaram , e shekita , j kiernan , r krishnamurthy , s viglas , j naughton , i tatarinov. venue: sigmod record. year: 2001
title: distributed query processing in a relational data base system. authors: r epstein , m stonebraker , e wong. venue: proceedings of the 1978 acm sigmod international conference. year: nan