Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

Ontology-Based Data Access and Integration

  • Diego Calvanese
  • Giuseppe De Giacomo
  • Domenico Lembo
  • Maurizio Lenzerini
  • Riccardo Rosati
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_80667

Definition

An ontology-based data integration(OBDI) system is an information management system consisting of three components: an ontology, a set of data sources, and the mapping between the two. The ontology is a conceptual, formal description of the domain of interest to a given organization (or a community of users), expressed in terms of relevant concepts, attributes of concepts, relationships between concepts, and logical assertions characterizing the domain knowledge. The data sources are the repositories accessible by the organization where data concerning the domain are stored. In the general case, such repositories are numerous, heterogeneous, each one managed and maintained independently from the others. The mapping is a precise specification of the correspondence between the data contained in the data sources and the elements of the ontology. The main purpose of an OBDI system is to allow information consumers to query the data using the elements in the ontology as...

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • Diego Calvanese
    • 1
  • Giuseppe De Giacomo
    • 2
  • Domenico Lembo
    • 2
  • Maurizio Lenzerini
    • 2
  • Riccardo Rosati
    • 2
  1. 1.Research Centre for Knowledge and Data (KRDB)Free University of Bozen-BolzanoBolzanoItaly
  2. 2.Dip. di Ingegneria Informatica Automatica e Gestionale Antonio RubertiSapienza Università di RomaRomeItaly