A survey of XQuery: an XML query language

Abstract

Currently, the most effective standard used for data exchange over the Internet is the eXtensible Markup Language (XML). The greatest strength of XML is, it can represent many different kinds of information from diverse sources including structured and semi-structured documents. Because of the widespread adoption of XML, the ability to intelligently query XML data sources becomes increasingly important This paper describes a query language called XQuery, which is designed to use the structure of XML intelligently and can express queries across all the kinds of data sources.