On the Desirability of Acyclic Database Schemes
Journal of the ACM (JACM)
On the unification of query algebras and their extension to rational tree structures
ADC '01 Proceedings of the 12th Australasian database conference
Foundations of Databases: The Logical Level
Foundations of Databases: The Logical Level
Entity-Relationship Modeling: Foundations of Database Technology
Entity-Relationship Modeling: Foundations of Database Technology
Translation Schemes and the Fundamental Problem of Database Design
ER '96 Proceedings of the 15th International Conference on Conceptual Modeling
An Allocation Model for Automatic Assignment Generation and Marking
ICALT '05 Proceedings of the Fifth IEEE International Conference on Advanced Learning Technologies
Comparing and transforming between data models via an intermediate hypergraph data model
Journal on Data Semantics IV
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In this article we argue in favour of a design theory for advanced datamodels such as object oriented models. We start from basic design desiderata for databases independent from the underlying datamodel. The basis of our investigation will then be a generic object oriented datamodel (OODM), for which all common datamodels can be considered as special cases.Then we approach a unification and generalization of dependency theory for the OODM focussing on functional, multi-valued, inclusion and join dependencies and cardinality constraints. One major problem in the theory is due to the presence of object identifiers. Finally, we discuss the relationship between dependencies, normal forms and the design desiderata emphasizing database schema translations.