What Is XML?
XML is a text-based way to describe structured data. Unlike HTML, which uses various markup tags to describe how data should be displayed or rendered in a Web browser, XML is simply data. With the need to move data between systems in a flexible and platform-neutral way, XML has become the standard way to pass data around the Internet. Some of the reasons for this are
XML is plain text; any computer can understand plain text
Data in an XML file is self-describing
Parsing XML documents has become fairly simple
XML can be transmitted over HTTP
XML can work across firewalls over HTTP
The data in an XML document is described through the use of elements. Elements create the structure for the document, similar to column names in a database. ...
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