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Contribution to the theory of data base relations. (English) Zbl 0399.68029


MSC:

68P05 Data structures
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[1] Codd, E.F., A relation model of data for large shared data banks, Cacm, 13, 6, (1970) · Zbl 0207.18003
[2] Codd, E.F., Further normalization of the data base relational model, (), 33-64
[3] Sperner, E., Ein satz über untermengen einer endlichen menge, Math. zeitschrift, Band 27, 544-548, (1928) · JFM 54.0090.06
[4] Armstrong, W.W., Dependency structures of data base relationships, (), 580-583 · Zbl 0296.68038
[5] Delobel, C.; Casey, R.G., Decomposition of a data base and the theory of Boolean switching functions, IBM J. res. and dev., 17, 374-386, (1973) · Zbl 0259.68016
[6] Yu, C.T.; Johnson, D.T., On the complexity of finding the set of candidate keys for a given set of functional dependencies, Information processing lett., 5, 4, 100-101, (1976) · Zbl 0336.68018
[7] S.L. Osborne, and F.Wm. Tompa, Comment on Yu and Johnson’s bound on the complexity of finding candidates keys (preprint).
[8] Fadous, R.Y., Mathematical foundations for relational data bases, ()
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