Keep in mind, however, that just because an XML file can easily be opened and viewed, it doesn't mean that it'll do anything. Lots of different types of programs use XML as a way to store their data in a standard way, but actually using an XML file for a specific purpose requires that you know what that particular XML file is storing data for.
Extensible Markup Language (XML) is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable.The W3C's XML 1.0 Specification and several other related specifications —all of them free open standards—define XML.. The design goals of XML emphasize simplicity, generality, and usability across the Internet.
Starting with the 2007 Microsoft Office system, Microsoft Office uses the XML-based file formats, such as .docx, .xlsx, and .pptx. These formats and file name extensions apply to Microsoft Word, Microsoft Excel, and Microsoft PowerPoint.
XML is a file extension for an Extensible Markup Language (XML) file format used to create common information formats and share both the format and the data on the World Wide Web, intranets, and elsewhere using standard ASCII text. XML is similar to HTML.
A file with the .xml file extension is an Extensible Markup Language (XML) file. These are really just plain text files that use custom tags to describe the structure and other features of the document.
What is a XML file? Files that contain the .xml file extension are Extensible Markup Language files. XML files are structured text files. These files can contain a variety of content for an array of computer application purposes. The XML file format uses custom tags that allow the transmission of files across applications and organizations.
With XML, the author must define both the tags and the document structure. XML is Extensible Most XML applications will work as expected even if new data is added (or removed).
An XML file is an XML (Extensible Markup Language) data file. It is formatted much like an .HTML document, but uses custom tags to define objects and the data within each object. XML files can be thought of as a text-based database.
Review the XML file's code. While the XML file's actual formatting (if present) won't display due to being opened in a text editor, you will be able to see the code that was used to create the XML file. If you want to see the XML file's formatting, try using a browser or using an XML viewer.
XML is similar to HTML, but because users can add their own building blocks, it allows for more flexibility. A key difference between HTML and XML is that HTML defines how data looks, while XML defines what data is. That’s why XML cannot replace HTML, rather it extends it. To describe data, XML relies on Document Type Definition (DTD).