![]() ![]() This encourages the vendors that develop W3C Schema validators to provide an API that you can use create an in-memory schema directly. For example, you can directly create an in-memory schema using any data structure that adheres to the Abstract Data Model. XML representation is the formal representation specified by WXS, but you are free to represent the Abstract Data Model any way you want and use it for validation. By defining an Abstract Data Model of the schema, the W3C Schema becomes agnostic about the language used to represent that model. The W3C XML Schema definition (WXS) represents the Abstract Data Model of W3C XML Schema (WXS) in XML language. Just as the English (or any other) language has an associated grammar that defines the rules about how a particular sentence can be composedand at the same time, given an English sentence, can be used to check the validity of that sentencea grammar for an XML instance document defines as well as ensures the validity of the structure and content of that document. ![]() ![]() Oracle JDeveloper 10 g(includes visual XML Schema editor)Ī grammar defines the structure and semantics of a language, enforces constraints, and ensures validity of the instance (the actual data). Learn how to use XML Schema constructs to declare, extend, and restrict the structure of your XML. ![]()
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