Consequences of Assuming a Universal Relation

  title={Consequences of Assuming a Universal Relation},
  author={William Kent},
  journal={ACM Trans. Database Syst.},
Although central to the current direction of dependency theory, the assumption of a universal relation is incompatible with some aspects of relational database theory and practice. Furthermore, the universal relation is itself ill defined in some important ways. And, under the universal relation assumption, the decomposition approach to database design becomes virtually indistinguishable from the synthetic approach. 
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Multivalued Dependencies and a New Normal Form for Relational Databases

ACM Trans. Database Syst. • 1977
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