• On equivalence and cores for incomplete databases in open and closed worlds 

      Forssell, Henrik; Kharlamov, Evgeny; Thorstensen, Evgenij (Chapter, 2020)
      Data exchange heavily relies on the notion of incomplete database instances. Several semantics for such instances have been proposed and include open (OWA), closed (CWA), and open-closed (OCWA) world. For all these semantics ...