Metaschema Layering for XML

: The Extensible Markup Language (XML) is based on the concept of schema languages, which are used for validation of XML documents. In most cases, the metamodeling view of XML-based application is rather simple, with XML documents being instances of some schema, which in turn is based on some schema language. In this paper, a metaschema layering approach for XML is presented, which is demonstrated in the context of various application scenarios. This approach is based on two generalizations of the standard XML schema language usage scenario: (1) it is assumed that one or more schema languages are acceptable as foundations for an XML scenario, but these schema languages should be customized by restricting, extending, or combining them; (2) for applications requiring application-specific schema languages, these schema languages can be implemented by reusing existing schema languages, thus introducing an additional metaschema layer. Metaschema layering can be used in a variety of applicat...

• Type: Conference
• Year: 2004
• Where: BXML
• Authors: Erik Wilde
• Keywords: BXML 2004, Metaschema Layering, Schema Languages, Software Engineering, XML Documents