- From: Jonathan Robie <jonathan.robie@datadirect.com>
- Date: Mon, 30 Jan 2006 10:03:50 -0500
- To: Michael Rys <mrys@microsoft.com>
- CC: TAN Kuan Hui <kuanhui@xemantics.com>, www-ql@w3.org
Looking at the spec, I see that we didn't really say that. We should put a paragraph in the compatibility appendix to explain what Michael said below. Jonathan Michael Rys wrote: >The updating integrity is guaranteed by the commutability constraints >(only operations considered to be commutable are allowed). The reason >you want an unordered collection is that you can perform your updates >efficiently and potentially in parallel. > >Best regards >Michael > > > >>-----Original Message----- >>From: www-ql-request@w3.org [mailto:www-ql-request@w3.org] On >>Behalf Of TAN Kuan Hui >>Sent: Monday, January 30, 2006 5:07 AM >>To: Jonathan Robie; www-ql@w3.org >>Subject: XQuery Update - unordered collection of update primitives >> >> >>Section 2.1, Extensions to the Processing Model, carries the following >>definition. >> >>[Definition: A pending update list is an unordered collection >>of update primitives, which represent node state changes that have not >>yet been applied.] >> >>What is the significance of an <<unordered>> collection of >>update primitives ? >>How is updating integrity preserved with an unordered >>collection of update >>instructions ? I could not find an explicit description on >>the above and >>would appreciate clarifications. >> >>Thank you. >> >>Kuan Hui >> >> >> >> >> >> >> >> -- Read my Blog: http://blogs.datadirect.com/jonathan_robie/ Learn XQuery: http://media.datadirect.com/download/docs/ddxquery/tutorial_query.html Learn XQJ (the JDBC for XQuery): http://www.datadirect.com/developer/xquery/topics/xqj_tutorial/ Get DataDirect XQuery: http://www.datadirect.com/products/xquery/
Received on Monday, 30 January 2006 15:04:29 UTC