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At 12:34 PM 5/12/2002 -0400, Elliotte Rusty Harold wrote: >At 12:02 PM -0400 5/12/02, Mike Champion wrote: > > >>>Where exactly does it state that? >> >>http://www.w3.org/TR/xquery/ >> >>"One of the great strengths of XML is its flexibility in representing >>many different kinds of information from diverse sources. To exploit >>this flexibility, an XML query language must provide features for >>retrieving and interpreting information from these diverse sources." >> >>"It is designed to be a small, easily implementable language in which >>queries are concise and easily understood. It is also flexible enough >>to query a broad spectrum of XML information sources, including both >>databases and documents. ... XQuery is derived from an XML query >>language called Quilt [Quilt], which in turn borrowed features from >>several other languages, including XPath 1.0 [XPath 1.0], XQL [XQL], >>XML-QL [XML-QL], SQL [SQL], and OQL [ODMG]." > >I always understood that to refer to native XML databases. I never thought >it meant traditional relational databases. And that says nothing about >querying objects. Relational database vendors *are* working on mappings of relational databases to XML so that databases can be queried using the XML view. In fact, SQLX is working on standards for this. See the following: The XML Data type and Publishing Functions: ftp://SQLStandards.org/SC32/National_Bodies/USA_NCITS_H2/2002docs/H2-2002-020r1.pdf Table Mapping: ftp://SQLStandards.org/SC32/National_Bodies/USA_NCITS_H2/2001docs/H2-2001-373r1.pdf Mapping non-predefined data types: ftp://SQLStandards.org/SC32/National_Bodies/USA_NCITS_H2/2002docs/H2-2002-018.pdf Jonathan
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