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XML Introduction
XML=Extensible markup language
XML is the extensible markup language,it is first finalized in 1998.XMLis the basic of many technologies on
the web and many software development areas.XML is almost similar to HTML.But XMl is case sensitive. XML
mainly use for storage or excange of data or information.xml documents can be used to stoire data that as documents -letters,reports,data
associated with databses.in addition to being suitable for storing data many types of data,XML documents can be use to transmit messages.
XML is Human readable.XML is a set of syntax rules. you can create your own set of element type names.many business domains will create
common vocabularies to assist data exchange.
what is the difference between HTML and XML?
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XML is a meta language ,a set of syntax rules.HTML is an application language ,a predifined vocabulary that uses the rules of another meta language.
- XML and HTML are derived form SGML but in different ways.
- HTML has defined number of tags defined by spevcification documents produced by W3C.But XML documents can contain any element names that you choose.
- HTML elements are not case sensitive but XML is case sensitive.
how XML is written?
XML is written using tags.
example
<title>webschools xml tutorials</title>
but in some HTML though it is not a good practice to omit end tag like </title> still you can omit. and get the output.but not in case of XML
how xml usefull for webdevelopers
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XML can Separate Data from HTML
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XML is used to Exchange Data
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Financial information can be exchanged over the Internet.(Help in B2B(BUSINESS TO BUSINESS) in near future)
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XML can be used to Share Data
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With XML, your data is available to more users
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