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A short on XML| Category | | | Summary | | XML (Extensible Markup Language) is a document-description language based on SGML (Standard Generalized Markup Language) and is a proposed replacement for HTML (HyperText Markup Language). |
| | Body | It is called "extensible" because it is not made up of a fixed set of tags like HTML. Instead, XML is actually a ?metalanguage?, which allows you to design your own personalized markup languages for any type of documents.
XML is a standard published by the World Wide Web Consortium (W3C), which is an organization that develops standards for a variety of Internet-related technologies such as HTML and Cascading Style Sheets (CSS).
The development of XML started in 1996 and was initiated by Jon Bosak of Sun Microsystems. He organized a diverse group of markup language experts to develop a simplified version of SGML (Standard Generalized Markup Language) for the Web. In February 1998, the XML 1.0 specification became a W3C recommendation.
Historically speaking, SGML is a huge, powerful, and complex way of encoding both text and data. It has been in heavy industrial and commercial use since 1986, and there is a significant body of expertise and software to go with it. XML is a lightweight, stripped-down version of SGML that keeps enough of its functionality to make it useful, but removes all the optional features that make SGML too complex to program with in a Web environment.
The need for a a smaller, simpler version of SGML was to allow it to be processed easily by either machines or humans and exchanged across diverse operating systems,applications, and hardware. XML can be used to store any kind of structured information, and to enclose or encapsulate information in order to pass it between different computing systems which would otherwise be unable to communicate.
Since the publication of the original W3C recommendation in 1998, many technologies have sprung up using the XML model. Some examples:
Formatting and publishing: CSS ? Cascading Style Sheets and XHTML ? Extensible Hypertext Markup Language
Authoring, Structuring and Validating: SGML ? Standard Generalized Markup Language and DTD ? Document Type Definition
Programming: SAX ? Simple API for XML and DOM ? Document Object Model
The W3C refers to their standards as recommendations. Like HTML and CSS, XML is an open standard, meaning that it is shared and available to all. This makes it possible for many companies to access their recommendations and start at the same point.
It is safe to say that XML is one of the most marketable skills you can have on your resume today.
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This article was imported from zZine. (original author: PrincesSoha)
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