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On complex type hierarchy

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2 Author(s)
Miura, T. ; Sanno Coll., Kanagawa, Japan ; Shioya, I.

Discusses the theoretical foundation for type hierarchy of complex objects to extend modelling concepts, semantics and constraints. Complex objects consist of entities and data-structure instances. We assume general constructions of data structures, i.e. not only sets and tuples but any structuring operators are allowed. Our discussion uses an instance-based data model. Since there may be infinite complex type information to each instance, we explore a simplified description in such a way that type schemes contain only least-general types. The heart of our approach exists in the semantic orders of complex objects

Published in:

Knowledge and Data Engineering Exchange Workshop, 1997. Proceedings

Date of Conference:

4 Nov 1997