Answer 1

Good Question.

XML is a markup language generally used to transfer data. You can use it to transfer data to a database from a webpage, or vice-versa. An alternative to XML is JSON.

HTML is a mark up language used to make websites. It is essential knowledge for any web developer. HTML's design is based on XML, so they are easy to confuse.

XHTML is a variant of HTML. It uses a more strict syntax and is less forgiving of mistakes.