OQL: a query language for manipulating object-oriented databases
VLDB '89 Proceedings of the 15th international conference on Very large data bases
A query language for a Web-site management system
ACM SIGMOD Record
XML-based information mediation with MIX
SIGMOD '99 Proceedings of the 1999 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
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As XML [12] becomes more popular, we expect XML documents to be stored in databases with different representations. So an important issue is to translate XML queries into the language of the database. XPath[13], the XML Path Language, is a standard for expressing navigation and selection in XML documents. Hence it can be used to specify certain kinds of XML queries. If XML documents are stored in a relational database, XPath queries have to be translated into SQL [11]. This paper proposes an algorithm to translate queries expressed in XPath to SQL statements. The algorithm uses information that specifies the mapping of XML documents to relational tables.