Answered: One of the following SQL constructs…

One of the following SQL constructs cannot be expressed in Relational Algebra - which one? a. CROSS JOIN b. ORDER BY c. GROUP BY d. nested queries e. SELECT DISTINCT

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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Single Table

In a database management system, a single table is designed to obtain data of heterogeneous items. A single-table design with DynamoDB resolves the issue of raising multiple requests for the relevant data of an entity.

Question

One of the following SQL constructs cannot be expressed in Relational Algebra - which one?

a. CROSS JOIN

b. ORDER BY

c. GROUP BY

d. nested queries

e. SELECT DISTINCT

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