Difference between revisions of "XML namespace"
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Latest revision as of 08:39, 21 April 2016
In XML, XML namespaces provide uniquely named elements and attributes. See Namespace.
Definition
XML namespaces are defined in a W3C recommendation.
Namespaces resolve ambiguity
An XML instance may contain element or attribute names from more than one XML vocabulary.
If each vocabulary is given a namespace, the ambiguity between identically named elements or attributes can be resolved.
Example
A simple example would be to consider an XML instance that contained references to a customer and an ordered product.
- Both the customer element and the product element could have a child element named id
- References to the id element would therefore be ambiguous
- Placing them in different namespaces resolves the ambiguity
See also
External Links
- XML namespace @ Wikipedia
