Which of the following pairs of expressions are unifiable? For those who are, give the resulting bindings for the variables. Give reasons if they cannot be unified. a) [[ a, b, c]] and [X|Y]. b) [A,A] and [X|[c,d,e]] . c) f(Z) + 1- Y * 2 and U - (1+2) *. d) f(X, f(X+1)) and f(0, f(1).

Which of the following pairs of expressions are unifiable? For those who are, give the resulting bindings for the variables. Give reasons if they cannot be unified. a) [[ a, b, c]] and [X|Y]. b) [A,A] and [X|[c,d,e]] . c) f(Z) + 1- Y * 2 and U - (1+2) *. d) f(X, f(X+1)) and f(0, f(1).

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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