What are XML files?
XML stands for Extensible Markup Language.
the 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. Both XML and HTML contain markup symbols to describe the contents of a page or file. HTML, however, describes the content of a Web page (mainly text and graphic images) only in terms of how it is to be displayed and interacted with. For example, the letter “p” placed within markup tags starts a new paragraph.
XML is considered extensible because, unlike HTML, the markup symbols are unlimited and self-defining. XML is a simpler and easier-to-use subset of the Standard Generalized Markup Language (SGML) standard for how to create a document structure. It is expected that HTML and XML will be used together in many Web applications. XML markup, for example, may appear within an HTML page.
How can XML be used?
- XML can keep data separated from your HTML
- XML can be used to store data inside HTML documents
- XML can be used as a format to exchange information
- XML can be used to store data in files or in databases
RSS and XML
RSS is used to share content between websites.
With RSS, you register your content with companies called aggregators.
So, to be a part of it: First, create an RSS document and save it with a .xml extension. Then, upload the file to your website. Next, register with an RSS aggregator. Each day the aggregator searches the registered websites for RSS documents, verifies the link, and displays information about the feed so clients can link to documents that interest them.
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