A Precise Definition of Basic Relational Notions and of the Relational Algebra


This paper presents a precise definition of basic relational notions as well as a precise and general definition of the relational algebra. The paper also illustrates a method for developing semi-formal definitions of data models. A nearly formal definition of relations with unordered attributes is given, and algebraic operations are described as operating… (More)
DOI: 10.1145/984514.984516


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