What Is XML

XML is not really a technology; it is a standard like Hypertext Markup Language (HTML). Most of us are familiar with HTML by now. Its primary use is to tell a web browser how to format a page visually. It contains tags for changing fonts, placing pictures, changing paragraphs styles, and so forth.

XML, on the other hand, contains tags for defining and transferring data. It is less about the visual display and more about describing data. The ability for XML to be extended by the users without prior approval of a standards body is what makes XML unique over HTML. In order to change HTML you must submit your request to the standards body (W3C) and wait for approval. XML’s ability to extend itself is built into its standard. Industries ...

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