Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

XML Element

  • Michael Rys
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_795

Synonyms

XML element

Definition

An XML element is a markup element in the W3C XML recommendation [1] that consists of a beginning markup tag and an end tag with optional content and optional attributes.

Key Points

An XML element is a markup element in the W3C XML recommendation [1] that consists of a beginning markup tag and an end tag.

It has to have balanced begin- and end-tags as in this example

<element>content</element>.

XML elements can be nested as in

<e1>some optional text <e2>nested element</e2> some optional text</e1>

They can have XML attributes as in

<element attribute="value">content</element>

And they can be empty, meaning have no content as in

<element/>.

The structure of elements is free within the grammatical rules of [1], but elements can be constrained and typed by schema languages such as XML DTDs [1] or XML Schema [2].

An XML element is represented as an XML element information item in the XML Information Set [3] and an XML element node in the XPath and XQuery...

This is a preview of subscription content, log in to check access.

Recommended Reading

  1. 1.
    XML 1.0 Recommendation, latest edition available online at: http://www.w3.org/TR/xml
  2. 2.
    Schema Part 0: Primer, latest edition available online at: http://www.w3.org/TR/xmlschema-0/
  3. 3.
    XML 1.0 Information Set, latest edition available online at: http://www.w3.org/TR/xml-infoset
  4. 4.
    XQuery 1.0 and XPath 2.0 Data Model (XDM), latest edition available online at: http://www.w3.org/TR/xpath-datamodel/

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Microsoft CorporationSammamishUSA

Section editors and affiliations

  • Sihem Amer-Yahia
    • 1
  1. 1.Laboratoire d'Informatique de GrenobleCNRS and LIGGrenobleFrance