Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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What would happen to insertions, deletions, and searches in the hash table if the linked list pointers were preserved in an AVL tree instead of the traditional tree format? In your answer, you are required to provide an explanation of the running time based on the size of the hash table. Is the Big-Ohnotation really required?
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- What would happen to searches, insertions, and deletions in the hash table if the linked list pointers were maintained in an AVL tree rather than the standard tree format? What would be the purpose of the AVL tree? It is expected of you that inside your response, you would offer an explanation of the running time depending on the size of the hash table. Is the Big Oh Notation really necessary in this case?arrow_forwardIs there a set limit on the number of linked lists that may be included in a hash table of size m? I've been trying to get my head around the purpose of a hash function, but I just can't seem to get it. Provide an example that helps to demonstrate how your theory is correct.arrow_forwardInstead of using an array to store pointers to linked lists, you would like to explore using an AVL tree that you have pre-populated with a node for each address in the hash table. Therefore, the number of nodes n in the AVL tree corresponds to the size of the hash table. How would using an AVL tree to store the pointers to the linked lists affect the running time of insertions, deletions, and finds in the hash table? Your answer must include a justification that describes the running time in terms of the hash table size. You must use big-Oh notation. For clarification, here is an example of a hash table (with table size = 6) using Separate Chaining. "Prima" "Butera" - "Smith" 1 2 "Presley" |/ 3 4 "Sinatra" "Martin" "Davis" 5 Here is an example of the same items stored in the new AVL Tree – Separate Chaining approach you must explore. 3 2 "Sinatra" "Martin" "Davis" "Presley" / "Prima" "Butera" "Smith" /arrow_forward
- Can m-sized linked lists be stored in a hash table? For what reasons do we need hash functions, exactly? Give me an instance of this happening.arrow_forwardThe values have been put into a single pool, and a hash map that was not constructed with much care has resulted (that is, they are all in the same LinkedList). Give a justification for why this is counterproductive to using a hash map.arrow_forwardDoes a hash table of size m always have the same number of linked lists? I have been trying to make sense of the function of a hash function for hours, but I just can't seem to get it. Give an instance to demonstrate your point.arrow_forward
- Does a hash table of size m always have the same number of linked lists? I have been trying to understand the function of a hash function for hours, but I just can't seem to get it. Provide an instance to demonstrate your point.arrow_forwardCan m-size linked lists be stored in a hash table? Why do we need to use a hash function, exactly? Give us a sample.arrow_forwardWe are utilising a substandard hash map in which all values are stored in a single container (i.e., they are all in the same LinkedList). The purpose of a hash map has been accomplished satisfactorily.arrow_forward
- 1. Consider an open hash (that is, one that deals with collisions by using a linked list) with a million entries. The hash algorithm takes 200ns to run, each comparison of objects takes 10ns, and everything else involved in the lookup takes trivial time. How large does the hash table need to be to use less time on chained comparisons than on the initial hash lookup? (Remember that you always have to compare once.)arrow_forwardSince our hash map was poorly constructed, all of the information is stored in a single container (a LinkedList). This completely negates any positive effects of using a hash map.arrow_forwardHow many linked lists does a chaining hash table of size T have? To what extent do the following data structures play a role in the Separate Chaining hash table?arrow_forward
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