| http://www.w3.org/ns/prov#value | - These models support features such as object identity, modelling of behaviour, encapsulation, and isa relationships. (An extension of our model with object-oriented features can be found in =-=[7]-=-.) A variety of languages were proposed for these models, encompassing all known paradigms of query languages: algebraic, calculus-based, logic-programming oriented, and SQLextensions.
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