Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Chapter 16, Problem 4PE

Explanation of Solution

Validation:

All the equivalence rules 1 through 7.b of the section 16.2.1 will hold for the multi-set version of the relation algebra that is defined in the chapter 2.

There will also be existence of equivalence rules which will hold for the ordinary relational algebra but will not hold for the multi-set version.

Example:

Consider the following rule:

AB = AB-(A-B)(

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