14
Deliverables Desired
•Abstract syntax
•Semantics
•Layering definitions:  e.g., Datalog Horn layer
•Concrete syntax: 
–Markup syntax in XML
–RDF (e.g., RDF/XML)
–Human-readable presentation (non-XML) syntax
•UML/MOF metamodel
•Some light ontology about rudimentary rule management, incorporated into the above
–E.g., to enable representing provenance, or expressive restrictions met, about a particular rulebase