Efficiently supporting order in XML query processing Maged El-Sayed, Katica Dimitrova, and Elke A. Rundensteiner   View Paper (PDF)   Return to Query and view processing Abstract , an XML data management system developed at WPI. We prove the correctness of our order encoding approach, namely that it ensures order handling for query processing and for view maintenance. We also show, through experiments, that the overhead of maintaining order in our approach is indeed neglectible. ©2004 Association for Computing Machinery