R2ML

The REWERSE Rule Markup Language (R2ML) is developed by the REWERSE Working Group I1 for the purpose of rules interchange between different systems and tools.

Scope
  • An XML based rule language;
  • Support for: integrity rules, derivation rules, production rules and reaction rules;
  • Integrate functional languages (such as OCL) with Datalog languages (such as SWRL);
  • Serialization and interchange of rules by specific software tools;
  • Integrating rule reasoning with actual server side technologies;
  • Deploying, publishing and communicating rules in a network.

Design principles
  • Modeled using MDA;
  • Rule concepts defined with the help of MOF/UML;
  • Required to accommodate:
    • Web naming concepts, such as URIs and XML namespaces;
    • The ontological distinction between objects and data values;
    • The datatype concepts of RDF and user-defined datatypes;
  • Actions (following OMG PRR submission);
  • Events;
  • EBNF abstract syntax;
  • XML based concrete syntax validated by an XML Schema;
  • Allowing different semantics for rules.

See also
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