Let the predicate N(x) stand for " has visited North Dakota". Which of the following choices is equivalent to the statement "Everyone has visited North Dakota"? Select 1 correct answer(s) 0 O 0 0 ¬³xN(x) -VxN(x) VxN(x) 3x-N(x) 3xN(x) Vx-N(x)

Let the predicate N(x) stand for " has visited North Dakota". Which of the following choices is equivalent to the statement "Everyone has visited North Dakota"? Select 1 correct answer(s) 0 O 0 0 ¬³xN(x) -VxN(x) VxN(x) 3x-N(x) 3xN(x) Vx-N(x)

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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Concept explainers

Predicates

A predicate is a function defined with set of variables, which returns the result True or False. The output of a predicate is a Boolean value as a response when given a set of parameters:

Question

Let the predicate N(x) stand for " has visited North Dakota".
Which of the following choices is equivalent to the statement "Everyone has visited
North Dakota"?
Select 1 correct answer(s)
0 0
U
0
3xN(x)
VxN(x)
VxN(x)
3x-N(x)
3x N(x)
Vx-N(x)

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