1. Expand in a two-object universe (the objects are named 'a' and 'b') (a) (Ex) ((Ax Bd) = Dy) (b)(x) (Ax & Cz) ~ (c) (x)-(Dy (Hx & -Ga)) Expanding a wff is not the same as reducing the wff to conjunctive normal form (or reducing it to disjunctive norma form). Read the text and my handout on how to do an expansion.

1. Expand in a two-object universe (the objects are named 'a' and 'b') (a) (Ex) ((Ax Bd) = Dy) (b)(x) (Ax & Cz) ~ (c) (x)-(Dy (Hx & -Ga)) Expanding a wff is not the same as reducing the wff to conjunctive normal form (or reducing it to disjunctive norma form). Read the text and my handout on how to do an expansion.

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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