[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Automating Search Interfaces
In message <34E871B8.CF85BB5F@4...>, John Petit <jpetit@4...> writes >By the way, I read your book and found it very informative. Thank you! >This is a question about how the search scenario will play out on the >web once XML becomes widely implemented. I have not seen this >articulated in any of the specifications or articles on the web thus >far. In lieu of that, I have imagined how it might work. I would like >some feedback. Am I way off base? Naturally the answer will have a big >impact on the design of search engines and other services that I am >creating. John, You have already had replies that: - comment on the potential use of 'architecture'-type techniques for harmonising the semantics of element types in different DTDs, and - point out that a suitably designed representation of relational data in XML will allow SQL-type queries on data that is really a relational wolf (?!) in XML sheep's clothing The only thing I would add is that neither approach gives us a query language for searching information sources that are genuinely XML, not 'relational-in-disguise'. Peter M-R mentioned on XML-dev a couple of months ago that he uses XLL expressions as a query language - this is the only approach that is currently possible within the 'official' XML world-view. The SGML world has invented a very exhaustive query language (SDQL, which lurks within the DSSSL standard) for full SGML documents, but this is probably inappropriate for the XML world. (One weakness of SDQL is that it has a 'read-only' model of the document, whereas SQL supports table creation and updating. Depends what you want from a query language.) Richard Light. Richard Light SGML/XML and Museum Information Consultancy richard@l... 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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