Polymorphism in Datalog and Inheritance in a Metamodel

Daniele Toti, Paolo Atzeni, Giorgio Gianforme

Risultato della ricerca: Contributo in libroContributo a convegno

2 Citazioni (Scopus)


We discuss the restructuring of a metamodel designed for representing several data models in a uniform way. This metamodel is currently used within MIDST, our Model Management proposal for performing translations of schemas and databases from a model to another. Such a restructuring is carried out by introducing hierarchies and, consequently, extending Datalog by providing it with inheritance and polymorphism in order to take advantage of them. In comparable scenarios, where predicates of the metamodel share structural elements and rules are syntactically and semantically similar, the use of hierarchies and a particular form of polymorphism provide significant advantages. These advantages range from simplifying the specification of elementary and complete translations (i.e. Datalog rules and programs, respectively) to ensuring a higher level of reuse for them, thus further improving the development of such rule-based systems. © 2010 Springer Berlin Heidelberg.
Lingua originaleEnglish
Titolo della pubblicazione ospiteLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Numero di pagine19
Stato di pubblicazionePubblicato - 2010
Evento6th International Symposium on Foundations of Information and Knowledge Systems, FoIKS 2010 - Sofia, bgr
Durata: 15 feb 201019 feb 2010

Serie di pubblicazioni



Convegno6th International Symposium on Foundations of Information and Knowledge Systems, FoIKS 2010
CittàSofia, bgr


  • datalog
  • metamodel
  • polymorphism


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