264Accesses
Synonyms
Definition
An XML element is a markup element in the W3C XML recommendation [3] 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 [3] 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 [3], but elements can be constrained and typed by schema languages such as XML DTDs [3] or XML Schema [1].
An XML element is represented as an XML element information item in the XML Information Set [2] and an XML element node in the XPath and XQuery...
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Recommended Reading
Schema Part 0: Primer, latest edition available online at:http://www.w3.org/TR/xmlschema-0/.
XML 1.0 Information Set, latest edition available online at:http://www.w3.org/TR/xml-infoset.
XML 1.0 Recommendation, latest edition available online at:http://www.w3.org/TR/xml.
XQuery 1.0 and XPath 2.0 Data Model (XDM), latest edition available online at:http://www.w3.org/TR/xpath-datamodel/.
Author information
Authors and Affiliations
Microsoft Corporation, Sammamish, WA, USA
Michael Rys
- Michael Rys
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Editor information
Editors and Affiliations
College of Computing, Georgia Institute of Technology, 266 Ferst Drive, 30332-0765, Atlanta, GA, USA
LING LIU (Professor) (Professor)
Database Research Group David R. Cheriton School of Computer Science, University of Waterloo, 200 University Avenue West, N2L 3G1, Waterloo, ON, Canada
M. TAMER ÖZSU (Professor and Director, University Research Chair) (Professor and Director, University Research Chair)
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© 2009 Springer Science+Business Media, LLC
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Rys, M. (2009). XML Element. In: LIU, L., ÖZSU, M.T. (eds) Encyclopedia of Database Systems. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-39940-9_795
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Print ISBN:978-0-387-35544-3
Online ISBN:978-0-387-39940-9
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