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Associations and roles in object-oriented modeling

  • Session 6b: Object-Oriented Modeling
  • Conference paper
  • First Online:
Conceptual Modeling — ER '97 (ER 1997)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 1331))

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Abstract

We present an extended ER model with entity, role, and association as the basic constructs for object-oriented modeling. The purpose of the constructs is to support object evolution and extension for long lived objects. A class hierarchy consists of a static part and a dynamic part. The static part is a classification of entity classes, while the dynamic part is the role classes played by entities. The interaction among objects are captured with association classes. Based on the observation that entities play roles in association with other entities, we provide a unified view on roles in associations and roles as an extension to objects. The proposed modeling constructs help developers better understand the interrelationship among entities, thus result in flexible implementations for dynamic systems.

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Author information

Authors and Affiliations

  1. Computer Science Department, University of California, 90095, Los Angeles, CA

    Wesley W. Chu & Guogen Zhang

Authors
  1. Wesley W. Chu
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  2. Guogen Zhang
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Editor information

David W. Embley Robert C. Goldstein

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© 1997 Springer-Verlag Berlin Heidelberg

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Chu, W.W., Zhang, G. (1997). Associations and roles in object-oriented modeling. In: Embley, D.W., Goldstein, R.C. (eds) Conceptual Modeling — ER '97. ER 1997. Lecture Notes in Computer Science, vol 1331. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-63699-4_21

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  • DOI: https://doi.org/10.1007/3-540-63699-4_21

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-63699-1

  • Online ISBN: 978-3-540-69630-8

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