Answered: Prove that the system resulting from…

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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Prove that the system resulting from the composition of two restrictive systems is itself restrictive.

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Step 1

Composition:

Composition refers to the process of combining two or more functions or systems to create a new function or system. In the context of functions, the composition of two functions f and g is denoted by $(f \circ g)$ and is defined as a new function that applies g to the input, and then applies f to the output of g. In other words, the output of the composed function $(f \circ g)$ is obtained by first applying g to the input, and then applying f to the output of g.

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