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At 05:00 PM 11/17/97 -0500, Jonathan Robie wrote: >I don't know much about SDQL. It is part of the DSSSL standard - is it >scheme based? Is it procedural? Is it based on SGML/XML document structure? >Can it be used for queries of types 1 and 2? SDQL is simply that part of the larger DSSSL expression language that enables the accessing of properties of nodes in groves and the navigation of groves. It uses the same syntax as the rest of DSSSL, that is a Scheme variant. It is based on the basic grove data model (nodes and their properties) but has some built-in functions related to SGML (e.g., "gi", "att-string", etc.). All the built-in functions are or can be defined in terms of primitives (e.g., node-property). It includes some basic string-matching functions but does not attempt to provide any sort of complete full-text facility (which would be outside the stated scope of DSSSL in any case). Note, however, that the syntax is largely arbitrary: what's important are the semantics of grove access. Thus, you can expect XSL to include the functional equivalent (more or less) of SDQL even though it may provide an alternative syntax. Cheers, E. -- <Address HyTime=bibloc> W. Eliot Kimber, Senior Consulting SGML Engineer Highland Consulting, a division of ISOGEN International Corp. 2200 N. Lamar St., Suite 230, Dallas, TX 95202. 214.953.0004 www.isogen.com </Address> 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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