Definition

XML stands for Extensible Markup Language. It is a type of text-based markup language that is used to store and transport data in a structured format. XML uses tags to define the structure and content of the data, similar to how HTML is used to define the structure of web pages.

Here is an example of XML code:

 The Hitchhiker's Guide to the Galaxy  Douglas Adams  Pan Books  1979  Science fiction comedy

In this example, the XML code defines a book with various properties such as title, author, publisher, publication year, and genre. The tags are used to define the structure of the data, with each tag indicating a different property of the book.

XML is often used in web development, data storage, and data interchange. It is a flexible and extensible format that can be customized to fit a wide variety of needs, and is supported by many programming languages and software tools. Because it is a text-based format, it can be easily read and edited by humans and machines alike.

Overall, XML is a powerful tool for structuring and organizing data, and is widely used in a variety of contexts to store and exchange information.