Xpath data model
Encyclopedia
XPath
XPath
XPath is a language for selecting nodes from an XML document. In addition, XPath may be used to compute values from the content of an XML document...

 is a language for selecting portions of an XML
XML
Extensible Markup Language is a set of rules for encoding documents in machine-readable form. It is defined in the XML 1.0 Specification produced by the W3C, and several other related specifications, all gratis open standards....

 Document (sequences of nodes of an XML tree
XML tree
XML documents have a hierarchical structure and can conceptually be interpreted as a tree structure, called an XML tree.This tree structure can not be divided into just root, nodes and leaves as normal tree structures...

). XPath uses a specific conceptual interpretation of XML documents, referred to as the XPath Data Model. Technical documents on XML often use the same terminology as the XPath data model
Data model
A data model in software engineering is an abstract model, that documents and organizes the business data for communication between team members and is used as a plan for developing applications, specifically how data is stored and accessed....

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