Tutorial XML

TUTORIAL XML

XML was designed to describe data and to focus on what data is.

HTML was designed to display data and to focus on how data looks.

What You Should Already Know

Before you continue you should have a basic understanding of the following:

• HTML / XHTML
• JavaScript

What is XML?

· XML stands for EXtensible Markup Language

· XML is a markup language much like HTML

· XML was designed to describe data

· XML tags are not predefined. You must define your own tags

· XML uses a Document Type Definition (DTD) or an XML Schema to describe the data

· XML with a DTD or XML Schema is designed to be self-descriptive

· XML is a W3C Recommendation

XML is a W3C Recommendation

The Extensible Markup Language (XML) became a W3C Recommendation 10. February 1998.

The main difference between XML and HTML

XML was designed to carry data.

XML is not a replacement for HTML.
XML and HTML were designed with different goals:

XML was designed to describe data and to focus on what data is.
HTML was designed to display data and to focus on how data looks.

HTML is about displaying information, while XML is about describing information.

XML does not DO anything

XML was not designed to DO anything.

Maybe it is a little hard to understand, but XML does not DO anything. XML was created to structure, store and to send information.
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