An amateur's introduction to recursive query processing strategies
SIGMOD '86 Proceedings of the 1986 ACM SIGMOD international conference on Management of data
SIGMOD '01 Proceedings of the 2001 ACM SIGMOD international conference on Management of data
Relational Databases for Querying XML Documents: Limitations and Opportunities
VLDB '99 Proceedings of the 25th International Conference on Very Large Data Bases
Efficiently Publishing Relational Data as XML Documents
VLDB '00 Proceedings of the 26th International Conference on Very Large Data Bases
From XML Schema to Relations: A Cost-Based Approach to XML Storage
ICDE '02 Proceedings of the 18th International Conference on Data Engineering
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Among many attempts to effectively store and query massive quantity of XML data, one method using RDBMS is drawing attention. It is to create appropriate relational schema by using DTD and then divide and store the XML document according to the schema. XML query for data stored as above can be implemented by rewriting it into SQL. Among this series of processes, in fact, intermediate mapping concept becomes necessary due to the difference between DTD and relational schema. It can help a user to compose a XML query transparently from a virtual physical structure, a relational schema. So, though the relational schema is properly modified for query performance, it doesn't have an effect on XML query. In this paper, we introduce some effective methods for flexible modification of relational schema using mapping structure, X2RMap.