university. Match each English statement with its equivalent logical expression. ? 1. No one is enrolled in both CS222 and CS252. A. -3x(C(x, CS222) A C(x, CS252)) B. C(Sarah, CS232) C. Ex(C(x, CS222) v C(x, CS252)) D. Vx3yC(x, y). E. 3yVxC(x, y) F.¬Vx(C(x, CS222) A C(x, CS252)) G. VyC(Sarah, y) H. 3rVyC(x, y) 1. 3x(C(x, CS222) A C(x, CS252)) J. 3yC(Sarah, y) ? v 2. Everyone is enrolled in some computer science classes. ? v 3. Sarah is enrolled in some computer science class. ? v 4. Someone is enrolled in all domputer science classes. ? v 5. Someone is enrolled in both CS222 and CS252. ? v 6. There is one class that is enrolled by all students.

university. Match each English statement with its equivalent logical expression. ? 1. No one is enrolled in both CS222 and CS252. A. -3x(C(x, CS222) A C(x, CS252)) B. C(Sarah, CS232) C. Ex(C(x, CS222) v C(x, CS252)) D. Vx3yC(x, y). E. 3yVxC(x, y) F.¬Vx(C(x, CS222) A C(x, CS252)) G. VyC(Sarah, y) H. 3rVyC(x, y) 1. 3x(C(x, CS222) A C(x, CS252)) J. 3yC(Sarah, y) ? v 2. Everyone is enrolled in some computer science classes. ? v 3. Sarah is enrolled in some computer science class. ? v 4. Someone is enrolled in all domputer science classes. ? v 5. Someone is enrolled in both CS222 and CS252. ? v 6. There is one class that is enrolled by all students.

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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Question

Let C(x. v) be x is enrolled in y, where the domain for x is the set of all students at a certain university and the domain for y is the set of all computer science classes being offered at the
university. Match each English statement with its equivalent logical expression.
? v 1. No one is enrolled in both CS222 and CS252.
A. -3x(C(x, CS222) ^ C(x, CS252))
B. C(Sarah, CS232)
C. Ex(C(x, CS222) v C(x, CS252))
D. Vx3yC(x, y).
E. 3yVxC(x, y)
F. -Vx(C(x, CS222) A C(x, CS252))
G. VyC(Sarah, y)
H. 3XVYC(x, y)
1. 3x(C(x, CS222) A C(x, CS252))
J. ByC(Sarah, y)
v 2. Everyone is enrolled in some computer science classes,
? v 3. Sarah is enrolled in some computer science class.
? v 4. Someone is enrolled in all domputer science classes.
v 5. Someone is enrolled in both CS222 and CS252.
? v 6. There is one class that is enrolled by all students.

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