4. What is the difference between the natural join RS and the theta-join RC S where the condition C is that R.A = S.A for each attribute A appearing in the schemas of both R and S? For example, if the relations are R(A, B, C, D) and S(C, D, E), what is the difference between R S and RR.C-S.C AND R.D=S.D S?

4. What is the difference between the natural join RS and the theta-join RC S where the condition C is that R.A = S.A for each attribute A appearing in the schemas of both R and S? For example, if the relations are R(A, B, C, D) and S(C, D, E), what is the difference between R S and RR.C-S.C AND R.D=S.D S?

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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