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1. For the following, show that KB does not entail a: (2x15=30) a) KB={p⇒q, r⇒q}; a= (p⇒r) s}; a = (sAq) b) KB={pq,

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

1. For the following, show that KB does not entail a: (2x15=30)
a) KB={p⇒ q, r⇒q}; a= (p⇒r)
b) KB={pq,
s}; a = (sAq)

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