7. Express the following sets using the roster method. Express the elements as strings, not n-tuples. (a) {xy : x € {0, 1}² and y E {1}²} (b) {lr1:x € {0}U {0}² U {0}³} (c) {a, b}° U {a, b}'u{a, b}?

7. Express the following sets using the roster method. Express the elements as strings, not n-tuples. (a) {xy : x € {0, 1}² and y E {1}²} (b) {lr1:x € {0}U {0}² U {0}³} (c) {a, b}° U {a, b}'u{a, b}?

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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