Extending the use of RuleML to store metadata and database semantics

Shifting legacy data held in stand-alone systems to be used in Web application systems can be expensive and time consuming. RuleML can be used to represent RDBMS data by storing database metadata in an external format for some design tools. Just as XML Schema, which uses elements and attributes to express the semantics of XML data, but XML Schema does not have active elements in principle; RuleML is used as a representation for RDBMS metadata too. This paper proposes the use of RuleML format to implement more semantics for Web forms and demonstrate how this RuleML based approach can provide support for greater semantics using the example of advanced domain support even when this is not a feature supported by a specific RDBMS. Keywords— Rulebase, RuleML, XML, Metadata.

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