An element can have element content, mixed content, simple
content, or empty content. An element can also have attributes.
simple
content (or text content)
XML elements must follow these naming rules:
Names can contain letters, numbers, and other characters
Names must not start with a number or punctuation character
Names must not start with the letters xml (or XML, or Xml, etc)
Names cannot contain spaces
XML can Separate Data from HTML
With XML, your data is stored outside your HTML.
XML and B2B
With XML, financial information can be exchanged over the Internet.
XML is Used to Exchange Data
With XML, data can be exchanged between incompatible systems.
In the real world, computer systems and databases contain data in incompatible formats