Let M(x, y) be the predicate " has emailed y". Let the domain be all studentsin this class. Select the statement below which means: "Everyone in the class hasbeen emailed by someone in the class".VxVy M(x, y)ByVx M(x, y)OVxy M(x, y)OxVy M(x, y)Vy³x M(x, y)Oxy M(x, y)

This can be read as "for all x, there exists y such that y has emailed x."like the statement asserts…

Answered: Let M(x, y) be the predicate " has…

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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Let M(x, y) be the predicate " has emailed y". Let the domain be all students in this class. Select the statement below which means: "Everyone in the class has been emailed by someone in the class". VxVy M(x, y) ByVx M(x, y) OVxy M(x, y) OxVy M(x, y) ©Vy7x M(x,y) Oxy M(x, y)