An XML file is a file format used for storing, transmitting, and reconstructing arbitrary data. It is a markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable. XML files contain tags that define not only how the document should be structured but also how it should be stored and transported over the internet. XML files can be used to store data in the form of hierarchical elements, and data stored in XML files can be read by computer programs with the help of custom tags. XML files can be opened and edited with text editors, web browsers, online editors, and application-specific programs. Some key features of XML files include:
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Tags: XML files contain tags that define the structure of the document and how it should be stored and transported.
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Extensibility: Unlike HTML, which has a predefined markup language, XML allows users to create their own markup symbols to describe content, making an unlimited and self-defining symbol set.
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Human- and machine-readability: Since XML can be read and interpreted by people as well as computer software, it is known as human- and machine-readable.
XML files have become one of the most widely used formats for sharing structured information among people, computers, and networks. They are used as the basis for various document formats, including RSS, Microsoft .NET configuration files, and Microsoft Office files. XML files can also be used to support interbusiness transactions and conveniently upgrade or modify application design.
