XQuery is a query language semantically similar to SQL, designed to query collections of XML data. From W3C: “The mission of the XML Query project is to provide flexible query facilities to extract data from real and virtual documents on the World Wide Web, therefore finally providing the needed interaction between the Web world and the database world. Ultimately, collections of XML files will be accessed like databases”.

Of all the possibilities that XQuery potentially offers, one of the most interesting would be its use in solving the Web’s “offline problem” and giving users seamless access to their data with or without an Internet connection.


XQuery is a superset of XPath, which is an expression language for addressing parts of an XML document and possibly computing values based on its content.

XPath Resources:


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