16.7. Related Work

In this section, we first present related work on XML query languages, which is useful for view definition. Then, we present an overview of XML data integration projects.

16.7.1. Query Languages for XML

Today, there is not yet a W3C standard for an XML query language. However, the W3C has proposed recently a working draft for a future query language standard: XQuery (Boag et al. 2002). XQuery is derived from a query language named Quilt (Chamberlin et al. 2000), which borrowed features from existing query languages. XPath (Clark and DeRose 1999) and XQL (Robie et al. 1998) were used for addressing parts of an XML document. XML-QL (Deutsch, Fernandez, Florescu et al. 1999) was used for its restructuring capabilities. XML-QL ...

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