Design by exmple: An application of Armstrong relations
Journal of Computer and System Sciences
Design theory
Some results about functional dependencies
Acta Cybernetica
The structure of the relational database model
The structure of the relational database model
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Information Systems
Reasoning about functional dependencies generalized for semantic data models
ACM Transactions on Database Systems (TODS)
Cardinality constraints in semantic data models
Data & Knowledge Engineering
The entity-relationship model—toward a unified view of data
ACM Transactions on Database Systems (TODS) - Special issue: papers from the international conference on very large data bases: September 22–24, 1975, Framingham, MA
On the Structure of Armstrong Relations for Functional Dependencies
Journal of the ACM (JACM)
A relational model of data for large shared data banks
Communications of the ACM
Fundamentals of Cardinality Constraints
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Theory of Relational Databases
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IBM Journal of Research and Development
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Discrete Applied Mathematics
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International Journal of Intelligent Systems
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Cardinality constraints as well as key dependencies and functional dependencies are among the most popular classes of constraints in database models. While the formal properties of each of the constraint classes are now well understood, little is known about their interaction. The objective of this paper is to discuss how constraints from these classes go together. We propose methods for reasoning about a set of cardinality constraints, key and certain functional dependencies. Moreover, we construct Armstrong databases for these constraints, which are of special interest for example-based deduction in database design.