1T. Bray, J. Paoli, and C. M. Sperberg-McQueen. Extensible Markup Language (XML) I.0. World Wide Web Consortium Recommendation. 1998. http://www.w3.org/ TR/1998/REC-xml- 19980210.html.
2P. Buneman, S. Davidson, W. Fan, et al. Reasoning about keys for XML. The 8th International Workshop. Lecture Notes in Computer Science. NY USA: ACM Press. 2001: 133-148.
1Bray T, Paoli J, Sperberg-McQueen CM. Extensible markup language (XML) 1.0. W3C Recommendation, 1998.http://www.w3, org/TR/REC-xml.
2Boag S, et al. XQuery 1.0: An XML query language. W3C Working Draft, 2002. http://www.w3.org/TR/xquery.
3Florescu D, Kossmann D. A performance evaluation of alternative mapping schemes for storing XML data in a relational database.Technical Report, No. 3684, INRIA, 1999.
4Shanmugaanndaram J, et al. Relational databases for querying XML documents: Limitationsand opportunities. In: Atkinson MP,et al., eds. Proceedings of the 25th International Conference on Very Large Data Bases. Edinburgh, Scotland: Morgan Kaufmann Publishers, 1999. 302-314.
5Buneman P, Davidson S, Fan W, Hara C, Tan W. Keys for XML. In: Proceedings of the 10th International Conference on World Wide Web. Hong Kong: ACM, 2001. 201-210.
6Buneman P, Fan W, Sim6on J, Weinstein S. Constraints for semistructured data and XML. SIGMOD Record (ACM Special Interest Group on Management of Data), 2001,30(1):47-54.
7Fan W, Schwenzer P, Wu K. Keys with upward wildcards for XML. In: Mayr HC, et al., eds. Database and Expert Systems Applications, 12th International Conference. Lecture Notes in Computer Science 2113, Munich, Germany: Springer-Verlag, 2001.657-667.
8Fan W, Sim6on J. Integrity constraints for XML. In: Proceedings of the 19th ACMSIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems. Dallas, Texas: ACM, 2000.23-34.
9Lee ML, Ling TW, Low WL. Designing functional dependencies for XML.In: Jensen CS, et al., eds. Advances in Database Technology--EDBT 2002, 8th International Conference on Extending Database Technology. Lecture Notes in Computer Science2287, Prague, Czech Republic: Springer-Verlag, 2002. 124-141.
10Thompson H, et al. XML schema. W3C Working Draft, 2001. http://www.w3.org/XML/Schema.