XML NameSpaces in SalesForce

XML NameSpaces:

An XML namespace is a collection of names identified by a URI reference and used in XML documents to uniquely identify element types and attribute names. Names in XML namespaces may appear as qualified names, which contain a single colon, separating the name into a namespace prefix and a local part. The prefix, which is mapped to a URI reference, selects a namespace. The combination of the universally managed URI namespace and the document's own namespace produces identifiers that are universally unique.

The following XML element has a namespace of http://my.name.space and a prefix of myprefix.

<sampleElement xmlns:myprefix="http://my.name.space" />

  In the following example, the XML element has two attributes:

• The first attribute has a key of dimension; the value is 2.
• The second attribute has a key namespace of http://ns1; the value namespace is http://ns2; the key is foo; the value is bar.

<square dimension="2" ns1:foo="ns2:bar" xmlns:ns1="http://ns1" xmlns:ns2="http://ns2" />

 For more information regarding XML Namespaces Please visit the below link

 http://www.xmlmaster.org/en/article/d01/c10/