EQUIVALENCE THEOREM FOR GENERALIZED DEPENDENCIES IN RELATIONAL DATABASES
Tóm tắt
In this paper, we present some new results related to the differential dependencies in relational databases. The main contributions are the following: (1) To introduce a new concept of generalized differential dependencies; (2) To claim and proof the equivalence theorem of consequences in the world of all relations, the word of two-tuple relations and propositional logic for the generalized differential dependencies; (3) To show an equivalence between generalized positive Boolean dependencies and generalized differential dependencies.
Từ khóa
DOI: http://dx.doi.org/10.37569/DalatUniversity.3.2.246(2013)
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Copyright (c) 2013 Nguyễn Xuân Huy, Trương Thị Thu Hà

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