Some Common Ways for Querying XML Data

The technique of querying the XML data is one of the important dimensions concerning XML-related technology.XPath,XSLT,XQuery are three languages for querying XML data.This paper shows the differences among the three languages in querying a XML document through an example.XPath is used for locating an XML document's node,but it can't be used by itself.XSLT is used for querying XML documents through template match and XPath location.XQuery uses XPath and FLWR expression for querying XML documents.It's better in function and supports multi-documents querying.