XML

 XML:

           XML (extensible Markup Language) is a Web standard for marking up content. All the Web markup languages are standardized by W3C (the World Wide Web Consortium) Here's an XML snippet taken from w3schools.com

                      

"XML (extensible Markup Language) is a markup language that is used to store and exchange data in a structured format. It is a flexible format that can be used to represent a wide range of data, including text, numbers, dates, and more. XML is widely used for data interchange between different systems and platforms."

To process XML data in a program, you typically need to parse the XML document and extract the information that you need. There are many libraries available for different programming languages that make it easy to parse XML data, such as the XML DOM (Document Object Model) library in Java or the System. Xml namespace in C#.