[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Query Languages for XML
Joe Lapp wrote: >This is a very significant point. I expect that DOM will define >query operations on its objects, so that via IDLs, programs will be >able to remotely manage persistent XML databases. However, for >reasons I've given in other posts, I think an XML-based query >language is necessary. The form of that query language might >mirror the form defined by DOM, but the query language will >necessarily provide constructs not named by DOM. DOM assumes the >existence of a Turing-complete programming language. Just as SQL >has, we would need to have mechanisms for piping filters through >each other and for performing operations on the result sets. The simpler operations of an XML-based query language can have profound impact on the usability of data on the Web. The high demand for web applications is drawing individuals with little to no programming experience to web development. They may find it quite difficult to write a script-based traversal algorithm using the XML DOM to extract some piece of information from a document. However, experience from the client-server world tells us that most people can easily learn how to formulate simple SELECT statements in SQL. I would speculate that, if a standard does not emerge by the next browser releases, vendors will move to provide their own query mechanisms. Why? Because they would like to make the consumption of arbitrary XML from within HTML as easy as possible. (IE4 DSOs are a move in the right direction.) Simeon Simeonov Allaire xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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