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Sams Teach Yourself XML in 24 Hours
book

Sams Teach Yourself XML in 24 Hours

by Charles Ashbacher
August 2000
Beginner
456 pages
9h 24m
English
Sams
Content preview from Sams Teach Yourself XML in 24 Hours

XML as a Metalanguage

A metalanguage is a language used to describe another language. For example, consider the words "noun," "verb," "adverb," and "adjective." These words describe the structure of sentences in most human languages, so they're part of a language used to describe a language. The advantage of a metalanguage is that it can be used to define more than one implemented language.

First and foremost, XML is a metalanguage used to define other languages. To understand this, you need to accept a very general definition of the word "language." For the purposes of this book, consider any form of data in a database to be a language. Since XML can be used to define the form of the data, it's a metalanguage.

As a metalanguage, XML allows ...

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Publisher Resources

ISBN: 0672319500Purchase book