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: query-preserving watermarking of relational databases and xml documents. authors: d gross-amblard. venue: nan. year: nan