2. Consider the sentence oVa 3y32 (P(x,y) ^ P(z, y) ^ (P(x, z) → P(z, x))). Which of the following models satisfies o? (a) The model M consists of the set of natural numbers with PM {(m,n) | m < n}. (b) The model M' consists of the set of natural numbers with PM' {(m, 2 * m) | m natural number}. (c) The model M" consists of the set of natural numbers with PM" {(m, n) | %3D m

2. Consider the sentence oVa 3y32 (P(x,y) ^ P(z, y) ^ (P(x, z) → P(z, x))). Which of the following models satisfies o? (a) The model M consists of the set of natural numbers with PM {(m,n) | m < n}. (b) The model M' consists of the set of natural numbers with PM' {(m, 2 * m) | m natural number}. (c) The model M" consists of the set of natural numbers with PM" {(m, n) | %3D m

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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