Owner
Standardisation body
XML is a versatile markup language, capable of
labeling the information content of diverse data sources including
structured and semi-structured documents, relational databases, and
object repositories. A query language that uses the structure of
XML intelligently can express queries across all these kinds of
data, whether physically stored in XML or viewed as XML via
middleware. This specification describes a query language called
XQuery, which is designed to be broadly applicable across many
types of XML data sources.