Encyclopedia of Database Systems

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

Deep Instantiation

  • Colin AtkinsonEmail author
  • Thomas Kühne
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_80608




A modeling language or framework supports deep instantiation when it provides explicit support for the construction of classification hierarchies with three or more domain classification levels. Such support obviates the need for “cascading” techniques that are often needed when representing multilevel classification hierarchies using traditional two-level approaches. Deep instantiation also allows the different (meta)-levels to be represented in a concise and uniform way, avoiding the replication that occurs with cascading techniques. Deep instantiation is strongly related to the notion of a “clabject” – a modeling element that is a “class” (type) and an “object” (instance) at the same time. The instance facet of such a clabject is described by its type, whereas its type facet describes the properties of its instances. The instances of clabjects may have further instances of their own, etc., giving rise to a multilevel classification hierarchy with an...

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Copyright information

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

Authors and Affiliations

  1. 1.Software EngineeringUniversity of MannheimMannheimGermany
  2. 2.School of Engineering and Computer ScienceVictoria University of WellingtonWellingtonNew Zealand

Section editors and affiliations

  • Manfred Jeusfeld
    • 1
  1. 1.IITUniversity of SkövdeSkövdeSweden