XML Schema

With the exception of the basic XML syntax, XML Schema is without a doubt the single most important technology in the XML family. In the Web services world, XML Schema is the key technology for enabling interoperation.

XML Schema is a W3C recommendation[3] that provides a type system for XML-based computing systems. XML Schema is an XML-based language that provides a platform-independent system for describing types and interrelations between those types. Another aspect of XML Schema is to provide structuring for XML documents.

[3] See http://www.w3.org/XML/Schema#dev for links to the XML Schema specifications.

Document Type Definitions (or DTDs) were the precursor to XML Schema, and are a text- (not XML-) based format designed to convey ...

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