Assume the following rules have been loaded into Prolog: p(_, 0, 1). p(A, A, 1). p(A, B, N): - A > 0, B> 0, A1 is A-1, B1 is B-1, p(A1, B, NO), p(A1, B1, N1), N is NO+N1. What will be the first value returned by this query? p(5, 2, N). O O O N = 4 N = 6 N = 8 N = 10

Assume the following rules have been loaded into Prolog: p(_, 0, 1). p(A, A, 1). p(A, B, N): - A > 0, B> 0, A1 is A-1, B1 is B-1, p(A1, B, NO), p(A1, B1, N1), N is NO+N1. What will be the first value returned by this query? p(5, 2, N). O O O N = 4 N = 6 N = 8 N = 10

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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Assume the following rules have been loaded into Prolog:
p(_, 0, 1).
p(A, A, 1).
p(A, B, N): -
A > 0,
B > 0,
A1 is A - 1,
B1 is B-1,
p(A1, B, NO),
p(A1, B1, N1),
N is NO+N1.
What will be the first value returned by this query?
p(5, 2, N).
O
O
O
N = 4
N = 6
N = 8
N = 10

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