1. What is XML?

XML is the Extensible Markup Language. It improves the functionality of the Web by letting you identify your information in a more accurate, flexible, and adaptable way. It is extensible because it is not a fixed format like HTML (which is a single, predefined markup language). Instead, XML is actually a meta language a language for describing other languages which lets you design your own markup languages for limitless different types of documents. XML can do this because it’s written in SGML, the More >