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Metaxpath, Curtis Dyreson, Michael H. Böhen, Christian S. Jensen
Metaxpath, Curtis Dyreson, Michael H. Böhen, Christian S. Jensen
Curtis Dyreson
This paper presents the METAXPath data model and query language. METAXPath extends XPath with support for XML metadata. XPath is a specification language for locations in an XML document it serves as the basis for XML query languages like XSLT and the XML Query Algebra.
The METAXPath data model is a nested XPath tree. Each level of metadata induces a new level of nesting. The data model separates metadata and data into different data spaces, supports meta-metadata and enables sharing of metadata common to a group of nodes without duplication. The METAXPath query language has a level shift operator to …