Encyclopedia of Database Systems

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

Ontology

  • Tom Gruber
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_1318

Synonyms

Computational ontology; Ontological engineering; Semantic data model

Definition

In the context of computer and information sciences, an ontology defines a set of representational primitives with which to model a domain of knowledge or discourse. The representational primitives are typically classes (or sets), attributes (or properties), and relationships (or relations among class members). The definitions of the representational primitives include information about their meaning and constraints on their logically consistent application. In the context of database systems, ontology can be viewed as a level of abstraction of data models, analogous to hierarchical and relational models, but intended for modeling knowledge about individuals, their attributes, and their relationships to other individuals. Ontologies are typically specified in languages that allow abstraction away from data structures and implementation strategies; in practice, the languages of ontologies are closer...

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Copyright information

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

Authors and Affiliations

  1. 1.RealTravelEmerald HillsUSA

Section editors and affiliations

  • Avigdor Gal
    • 1
  1. 1.Fac. of IE & Mgmt.Technion--Israel Inst. of TechnologyHaifaIsrael