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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: The use of XML syntax in XML Query
 | I think the XML database world needs a single query language that can be | used without extra layers of DOM, SAX, Java, or XSLT to do everyday tasks. | And I think that the few features of XQuery that have not been taken into | XPath 2.0, such as function definitions and element constructors, are | extremely useful for everyday tasks. Some vendors are pursuing multiple XML querying *syntax* strategies due to the needs of their customers. The XQuery effort in the W3C and the SQLX effort (www.sqlx.org) are both multi-vendor groups pursuing syntaxes that various constituencies will find palatable. Oracle, for example, is participating in both. You see the names of other large companies with major investments in (object/)relational database technologies in widespread production use today on both groups, too. Our (speaking for Oracle here) customers have begged us to seamlessly integrate XML Data as *one kind* of data among the other sorts of information they already process (relational, full-text, multimedia, spatial, time-series, data warehouse, etc.) For these customers, building apps that need to work with XML data and with other kinds of data, they want a single query language that works with them all. These customers already know SQL, so the SQL extensions for XML (some which are being pursued in the SQLX group) will likely appeal to them and their developers. If they know SQL and XPath and a few new SQL keywords, they'll be set. Developers at companies whose data is purely XML will likely find XQuery to be a more pleasing syntax for them. Having a query engine underneath that can handle both constituencies' favorite syntax with equal performance is what takes lots of hard work. That's at least what our implementation experience to date has taught us... _____________________________________________________________________ Steve Muench - Developer, Product Manager, XML Evangelist, Author "Simplifying J2EE and EJB Development with BC4J" http://otn.oracle.com/products/jdev/htdocs/j2ee_with_bc4j/j2ee_with_bc4j.html "Building Oracle XML Applications" - www.oreilly.com/catalog/orxmlapp 
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