Anzeige
Erschienen in:
2011 | OriginalPaper | Buchkapitel
Modeling Techniques for Multi-level Abstraction
verfasst von : Bernd Neumayr, Michael Schrefl, Bernhard Thalheim
Erschienen in: The Evolution of Conceptual Modeling
Verlag: Springer Berlin Heidelberg
Aktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Employing multi-level abstraction in modeling refers to representing objects at multiple levels of one or more abstraction hierarchies, mainly classification, aggregation and generalization. Multiple representation, however, leads to accidental complexity, complicating modeling and extension. Several modeling techniques, like powertypes, deep instantiation, materialization, m-objects, HERM, and the component model may be used to reduce unnecessary complexity with multi-level abstraction. This chapter compares these modeling techniques using four comparison criteria: (1) compactness (modular and redundancy-free models), (2) query flexibility (number and kind of pre-defined entry points for querying), (3) heterogeneous level-hierarchies, and (4) multiple relationship-abstractions (such as between relationship occurrence and relationship type).