Abstract
Four database modeling paradigms are compared along a number of dimensions, including their treatment of ‘object identity’; issues of redundant structure and/or data; the notions of ‘type’ and ‘class’; their treatment of sets and context-dependent data; and their treatment of ISA relationships. The modeling paradigms are: complex object types (including nested relations); semantic models; complex object models using object identifiers; and the model of the conceptual language Galileo. The presentation is largely informal, with a focus on philosophic issues.
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