following wffs are jointly satisfiable. If they are, then read off from your tree a model on which they are both true. (Hba →a = a) ∨(∃yy = y →c = c)
following wffs are jointly satisfiable. If they are, then read off from your tree a model on which they are both true. (Hba →a = a) ∨(∃yy = y →c = c)
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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Use a tree to test whether the following wffs are jointly satisfiable. If they are,
then read off from your tree a model on which they are both true.
(Hba →a = a) ∨(∃yy = y →c = c)
b = a ∧∃xx = x
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