Answered: A bad hash map placed all values in the…

A bad hash map placed all values in the same bucket (that is, they are all in the same LinkedList). Explain why using a hash map defeats its purpose.

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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Concept explainers

Hash Table

A hash table also called a hash map, is a data structure that maps key-value pairs. The hash table can be used in complex systems to provide fast access and compact storage. A hash table is a structure that stores data in an abstract data type kind of associative array. It keeps data in an array format, with a distinct index value for every data value. If the index of the required data is known, then the data can be accessed very easily.

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A bad hash map placed all values in the same bucket (that is, they are all in the same
LinkedList). Explain why using a hash map defeats its purpose.

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In this case, we have a hash map that was not constructed with a lot of care since all of the values have been lumped together (that is, they are all in the same LinkedList). In your own words, please elaborate on why this undermines the use of a hash map.
2
Because of the shoddy way in which the map was built, all of the hash map's contents are contained in a single LinkedList. The hash map's utility is reduced as a consequence.