Get XQuery 1.0: An XML Query Language

What is XQuery? XQuery is the language for querying XML data. XQuery for XML is like SQL for databases. XQuery is built on XPath expressions. XQuery is supported by all major databases. XQuery is a W3C Recommendation.

XQuery is a functional programming language that was designed by the World Wide Web Consortium (W3C) to meet specific requirements for querying and modifying XML data.

XQuery can be used to: Extract information to use in a Web Service. Generate summary reports. Transform XML data to XHTML. Search Web documents for relevant information.

Using XPath with the selectPath Method In other words, changes your code makes to XML returned by the selectPath method change the XML in the document queried against. In contrast, with XQuery executed using the execQuery method, the value returned is a copy of values in the XML queried against.

XQuery vs XPath XPath is a xml path language that is used to select nodes from an xml document using queries. XQuery is used to extract and manipulate data from either xml documents or relational databases and ms office documents that support an xml data source.

What is XQuery For? XQuery was devised primarily as a query language for data stored in XML form. So its main role is to get information out of XML databases — this includes relational databases that store XML data, or that present an XML view of the data they hold.

XQuery is program driven while XSLT is document-driven. XQuery is declarative while XSLT is functional. XSLT is written in XML while XQuery is not written in XML. XQuery is used only for simple transformations while XSLT is a language that was especially designed to process tree structures.

XPath is used to read and write data from the XML document. XPath is a language that is used for addressing parts of an XML document and operates on the abstract, logical structure of an XML document.