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XQuery Update: An Update
The XQuery Update Facility is an eagerly awaited W3C standard for updating XQuery Data Model instances. In preparation for almost three years, the spec has almost reached the finish line. The language provides a small set of extensions to XQuery 1.0, using the same declarative approach, retaining the functional programming nature of XQuery as much as possible.
This talk explains the concepts of the Update language, particularly the syntax and its declarative nature, the manner in which the semantics are specified, and a brief look at the definitional techniques of the spec. The presentation is driven by examples and touches on some of the unexpected issues that arose during the language’s creation.
In addition to the concrete information about the Update Facility itself, attendees will get a glance into the crystal ball to see possible enhancements under consideration by XQuery’s definers.
Jim Melton
Oracle Corp.
Jim has been the SQL standard editor for more than two decades, publishing five books covering various aspects of the SQL standard along the way. He helped develop SQL/XML, specifying technology for effectively using SQL and XML together.
Jim is a co-chair of the W3C’s XML Query Working Group and an editor or co-editor of several of the Recommendations and other specifications associated with XQuery: Functions & Operators, XQueryX, XQuery/XPath Full Text, and the XQuery Update Facility. In 2006, he published (with Stephen Buxton) “Querying XML: XQuery, XPath, and SQL/XML in Context”.
Jim is a frequent speaker at conferences on various subjects related to the Web and its underlying technologies. His technology interests include SQL and XQuery, but also RDF, OWL, and SPARQL.