Though the XSLT and XQuery share the same data model, type system and function library they are created by different working groups within W3C in order to work in large collections the query language was initially created and this language deals with the large collections of XML documents and not only with large collection of the documents it can also work with the documents that are individual documents, there are many differences between these languages.
In the web development circles the XHTML is continually expanding, since there are
While a little bit out dated for its testing realm, this article holds some still useful information for the modern developer. "XML in the browser has been the subject of many spirited discussions about bleeding-edge web development. Some feel that XML in place of HTML isn’t ready for prime time due to the lack of user agents that can properly parse and render it. Others feel that XML really belongs on the server or used solely as a descriptive framework for data and has no place in the visual world of the Web which is already adequately served by
Summary:
The purpose of an XML namespace is to allow the deployment of XML vocabularies (in which element and attribute names are defined) in a global environment and to reduce the risk of name collisions in a given document when vocabularies are combined. For example, the MathML and SVG specifications both define the set element. Although XML data from different formats such as MathML and SVG can be combined in a single document, in this case there could be ambiguity about which set element was intended. XML namespaces reduce the risk of name
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