What is XML how to implement and when to use it

XML (Extensible Markup Language) is a markup language and was designed to describe structured data and information and the format is human-readable and machine-readable. You must create your own tags because XML tags are not predefined.

Example of XML

<?xml version="1.1" encoding="UTF-8"?>

The first line is an XML declaration

<?xml version="1.1" encoding="UTF-8" standalone="yes"?>

XML declaration may consists the version number of XML, the encoding character set[optional] and the standalone declaration[optional].

Version number of XML

XML version 1.1 must have a declaration leaving this out means it's an XML 1.0.

Encoding

If Encoding pseudo-attribute wasn't declared it depends on the unicode character either have UTF-8, UTF-16 or UTF-32 and according to W3C suggestion it's better to declare this attribute to "UTF-8" for all content, you can find the other character sets here » http://www.iana.org/assignments/character-sets/character-sets.xhtml

Standalone

The default value of standalone psuedo-attribute is no and means there is an external markup declaration, no need to declare this attribute if you don't use DTD.

XML tags must be closed properly

Apple
<fruit color="Red" />

And XML tags are case-sensitive

This is true
<note>This is false</Note>

I hope this simple explanation of XML could help you to make your own XML Sitemap.

Title : What is XML and how to implement and use it

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