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What is XQuery

XQuery is a functional query language used to retrieve information stored in XML format. It is same as for XML what SQL is for databases. It was designed to query XML data.

XQuery is built on XPath expressions. It is a W3C recommendation which is supported by all major databases.

The as it is definition of XQuery given by its official documentation is as follows:

"XQuery is a standardized language for combining documents, databases, Web pages and almost anything else. It is very widely implemented. It is powerful and easy to learn. XQuery is replacing proprietary middleware languages and Web Application development languages. XQuery is replacing complex Java or C++ programs with a few lines of code. XQuery is simpler to work with and easier to maintain than many other alternatives."

XQUERY What is query 1

What does it do

XQuery is a functional language which is responsible for finding and extracting elements and attributes from XML documents.

It can be used for following things:

  • To extract information to use in a web service.
  • To generates summary reports.
  • To transform XML data to XHTML.
  • Search Web documents for relevant information.

History

XQuery was designed by W3C and first appeared in 2007. It became the W3C recommendation on January 23, 2007. XQuery 3.0 is a W3C recommendation from April 8, 2014.

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