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Home > Online Product Documentation > Table of Contents > About XPath About XPathXPath is a notation for retrieving information from a document. The information could be a set of nodes or derived values. XPath allows you to identify parts of an XML document. In addition, a subset of XPath allows you to test whether or not a node matches a particular pattern. XPath provides Boolean logic, filters, indexing into collections of nodes, and more.
XPath is declarative rather than procedural. You use a pattern modeled on directory notation to describe the types of nodes to look for. For example,
XPath provides a common syntax for features shared by Extensible Stylesheet Language Transformations (XSLT) and XQuery. XSLT is a language for transforming XML documents into XML, HTML, or text. XQuery builds on XPath and is a language for extracting information from XML documents. The basic syntax for XPath mimics the Uniform Resource Identifier (URI) directory navigation syntax. However, the syntax does not specify navigation through a physical file structure. The navigation is through elements in the XML tree. |
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