Datalog as a Lingua Franca for Provenance Querying and Reasoning
نویسندگان
چکیده
The Open Provenance Model (OPM) [20] provides a small, extensible core for representing and exchanging provenance information in a technology-neutral manner. By design, OPM is a least common denominator, leaving aside certain aspects, including how to query provenance information. Similarly, OPM comes with a set of inference rules (e.g., for transitively closing some relations, or for stating temporal constraints that are implied by provenance assertions), but as pointed out by [15], the temporal semantics of OPM graphs is only partially defined in [20], leading to ambiguous or incompletely specified situations.
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