Consider the relation scheme R (A, B, C, D, E) and the set of functional dependencies F = { A →ВС; CD — E;В — D;E — А} on R.Find closure set of functional dependencies (F)+.What is the key for R?

Closure (A) =(A, B, C, D, E) Closure(CD) =(C, D, E, A, B) Closure (B) =(B, D) Closure (E) =(E, A,…

Consider the relation scheme R (A, B, C, D, E) and the set of functional dependencies F = { A –→ BC; CD → E; B→D; E-→ A} on R. Find closure set of functional dependencies (F)+. What is the key for R?

Consider the relation scheme R (A, B, C, D, E) and the set of functional dependencies F = { A –→ BC; CD → E; B→D; E-→ A} on R. Find closure set of functional dependencies (F)+. What is the key for R?

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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Consider the relation scheme R (A, B, C, D, E) and the set of functional dependencies F = { A →
ВС; CD — E;
В — D;
E — А} on R.
Find closure set of functional dependencies (F)+.
What is the key for R?

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