Computer Science and Engineering, Department of


Date of this Version



Y. Chen, P. Z. Revesz, CXQuery: A novel XML query language, Proc. International Conference on Advances in Infrastructure for Electronic Business, Science, and Medicine, pp. 45, L'Aquila, Italy, January 2002.


Yi Chen. Ph.D. in Computer Science, University of Nebraska-Lincoln, December 2003.


XML is becoming the data exchange standard on the Internet. Previously proposed XML query languages, such as XQuery, Quilt, YALT, Lorel, and XML-QL, lack schema definition of the query result; therefore, they are limited for defining views, integrating data, updating, and further querying, all of which are often needed in e-Business applications. We propose a novel XML query language called CXQuery, which defines the schema of the query results explicitly and can easily define views, and integrate, update, and query XML data. In addition, CXQuery can express spatial and spatio-temporal queries using a constraint-based querying approach.