Chapter

Database and Expert Systems Applications

Volume 1677 of the series Lecture Notes in Computer Science pp 26-35

Date:

Dynamic Relationships in Object Oriented Databases: A Uniform Approach

  • Awais RashidAffiliated withComputing Department, Lancaster University
  • , Peter SawyerAffiliated withComputing Department, Lancaster University

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Abstract

In this paper we present a uniform approach to dynamic relationships in object oriented databases. We present our relationship categorisation based on dividing the object database into three virtual spaces each hosting entities of a particular type and show how relationships from the modelling domain map onto relationships in our categorisation. We present a relationship model and the semantics of relationships. The relationship model is complemented with a metamodel for implementing dynamic relationships in an object oriented database. The applicability of the dynamic relationships approach is explored by employing it to implement the database model for a system in order to achieve dynamic schema modification capabilities.