XML Concepts
Extensible Markup Language, or XML as it is popularly known, is a markup language similar to Hyper Text Markup Language (HTML) but far more powerful than HTML. XML is a simpler form of the Standardized Generalized Markup Language (SGML), which is the parent of all markup languages.
What makes XML different is that it is not a language but a “meta” language, that is, a language that in turn describes another language. Perhaps it will help to discuss this feature in the context of HTML. As any Web developer knows, HTML is a language with a predefined set of tags (defined in the HTML specification) that are embedded in a file called an HTML file that is rendered by a Web browser. XML, on the other hand, does not have any predefined ...
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