How do we calculate a functional dependence closure? Which of the following give a good example of the process? add non-candidate keys to the dependencies, e.g. F + non-key attribute get all the inferred dependencies: if a --> b and b--> c, then we can infer a --> c is a functional dependency all the superkey dependencies should be calculated, e.g. F + (b-> Super Key) found unidentified dependencies, if a-->b and a-->c, then b-->c is a functional dependency

List all the funtional dependency present in the relation. Find the unidentified functional…

Answered: How do we calculate a functional…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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How do we calculate a functional dependence closure? Which of the following give a good example of the process?

		add non-candidate keys to the dependencies, e.g. F + non-key attribute
		get all the inferred dependencies: if a --> b and b--> c, then we can infer a --> c is a functional dependency
		all the superkey dependencies should be calculated, e.g. F + (b-> Super Key)
		found unidentified dependencies, if a-->b and a-->c, then b-->c is a functional dependency

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