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Extending Normal Forms to Temporal Relations

Christian S. JensenR. T. SnodgrassMichael D. Soo

出版	University of Arizona, Department of Computer Science, 1992
URL	http://books.google.com.hk/books?id=Qw2rPgAACAAJ&hl=&source=gbs_api

註釋Abstract: "Normal forms play a central role in the design of relational databases. Recently several normal forms for temporal relational databases have been proposed. The result is a number of isolated and sometimes contradictory contributions that only apply within specialized settings. This paper attempts to rectify this situation. We define a consistent framework of temporal equivalents of all the important conventional database design concepts: functional and multivalued dependencies, primary keys, and third, Boyce-Codd, and fourth normal forms. This framework is enabled by making a clear distinction between the logical concept of a temporal relation and its physical representation