XML

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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. Many application programming interfaces (APIs) have been developed to aid software developers with processing XML data (Source: WikiPedia)

Merriam-Webster Online Dictionary
XML (noun)
a markup language with use and design similar to HTML but employing tags that indicate the logical structure in addition to the display specifications of the coded data
XML (Wikipedia)

Extensible Markup Language (XML) is a markup language that defines a set of rules for encoding documents in a format which is both human-readable and machine-readable. It is defined by the W3C's XML 1.0 Specification and by several other related specifications, all of which are free open standards.

The design goals of XML emphasize simplicity, generality and usability across the Internet. It is a textual data format with strong support via Unicode for different human languages. Although the design of XML focuses on documents, it is widely used for the representation of arbitrary data structures such as those used in web services.

Several schema systems exist to aid in the definition of XML-based languages, while many application programming interfaces (APIs) have been developed to aid the processing of XML data.

About David Rashty

David Rashty, an entrepreneur and one of the early web pioneers, has over twenty years’ experience as a CTO and a CEO. He has been involved in several start-ups and established companies and was the founder of two successful ventures.David is currently using his proven leadership and management skills to act as a Part Time CTO or "JumpStart" CTO for several early-stage ventures; this includes helping them design and develop their product and IT infrastructure.David holds a BS in computer science and an M.Sc in educational technology. He has been a adjunct university professor, given numerous workshops, written several books and articles on information technology and received numerous innovation awards.