| | XML Schema Definition -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-29) |
 | | An XML Schema Definition (XSD) is an instance of an (additional info and facts about XML schema) XML schema written in the (additional info and facts about XML Schema) XML Schema language. |
 | | An XSD defines a type of (additional info and facts about XML) XML document in terms of constraints upon what elements and attributes may appear, their relationship to each other, what types of data may be in them, and other things. |
 | | XSDs were the first (additional info and facts about W3C) W3C-recommended (additional info and facts about XML schema) XML schemas to provide a namespace- and datatype-aware alternative to using XML's built-in (additional info and facts about Document Type Definition) Document Type Definitions (DTDs). |
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