Prove that the two properties of the hierarchy function allow only trees and single nodes as organizations of objects

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
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Prove that the two properties of the hierarchy function allow only trees and single nodes as organizations of objects

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Introduction

A data structure for storing information in a hierarchical fashion is the tree . It is made up of a number of nodes, each of which is connected to every other node by edges. All other nodes are descendants of the root node, which is the highest node in the tree. The relationship between the nodes and the data held in each node is shown by the edges in the tree. The nodes in a file system or the nodes in a graph are examples of complicated data structures that can be represented by trees. Additionally, they are utilized to store and search information more effectively.

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