Abstract
The relational model of data, originally introduced by Codd in [1], has three components: (1) a set of objects (relations, domains, etc.); (2) a set of operators (union, project, etc.); (3) a set of general integrity rules. The purpose of this paper is to provide a formal definition of each of these three components.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have