XML

what is xml - an article from ana web hosting

What is XML - Extensible Markup Language?

XML stands for Extensible Markup Language and is a subset or restricted form of SGML, the Standard Generalized Markup Language.

It is a Meta-Language for describing Markup Languages, provides a way of defining tags and the structured relationships between them.
Describes the object class called XML Documents.
XML defines a standard way to add Markup to a document.
Main purpose is to describe data.
You must define, open and close all of the tags.
XML specifies neither semantics or tag sets.
Developed by the board of SGML under W3C, the World Wide Web Consortium in 1996.
It enables SGML to be received, served and processed.
Widely supported.
Compatible with HTML and SGML.
It's relatively easy and quick to create applications to process XML Documents.
XML is easy to implement using the World Wide Web.
Contains very few optional features.
XML Documents are legible and obvious.
XML Documents are recommended by W3C.
It's like HTML
Uses DTD (Document Type Definition) or XML Schema to describe the data.
Designed to be self descriptive.

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