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Wednesday, April 2, 2008

W3C XML Query Working Group Invites Comment on XQuery Working Drafts

Members of the W3C XML Query Working Group have published two First
Public Working Drafts: "XQuery Scripting Extension 1.0" and "XQuery
Scripting Extension 1.0 Use Cases." The XQuery Scripting Extension 1.0
specification defines an extension to "XQuery 1.0: An XML Query
Language" (W3C Recommendation") and "XQuery Update Facility 1.0
(W3C Candidate Recommendation). Expressions can be evaluated in a
specific order, with later expressions seeing the effects of the
expressions that came before them. This specification introduces the
concept of a block with local variable declarations, as well as several
new kinds of expressions, including assignment, while, continue, break,
and exit expressions. The "Use Cases" document provides the usage
scenarios that motivate the changes developed in the XQuery Scripting
Extension (XQSE).

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