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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Is it consistent to say that a hash table of size m always contains the same number of linked lists? I've been trying to understand the purpose of a hash function for ages. Give an illustration of your point with an example.
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- Is the quantity of linked lists included in a hash table of size m constant? I have no idea what a hash function is for, for the life of me. Give an example to support your point.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_forwardTo what extent does using a hash table facilitate quicker processing times than a traditional list? Is there anything that might be the problem here?The implementation of a hashtablearrow_forward
- We have an incorrectly created hash map, with all of the values put in the same bucket (that is, they are all in the same LinkedList). Explain why this is a breach of the original goal of the hash map and why it should be avoided.arrow_forwardDoes a hash table of size m always have the same number of linked lists? No matter how long I try, I just can't put my finger on the function of a hash function. Give a case study to demonstrate your point.arrow_forwardWe have a poorly designed hash map in which all values have been placed in the same bucket (that is, they are all in the same LinkedList). Explain how this goes against the purpose of utilizing a hash map in the first place.arrow_forward
- The Java hash function for Strings computes a hash code based on a fixed maximum number of characters of the string. Given that Strings have no meaningful upper bound in length, describe how an effective, constant-time hashing algorithm can be constructed. (Hint: If you were to pick, say, eight characters to represent a string of length l, which would you choose?)arrow_forwardIs the number of linked lists included inside an m-dimensional hash table always the same? I can't for the life of me figure out what a hash function is for. Give an example to back up your point.arrow_forwardThe values have been placed in a single pool, resulting in a hash map that was constructed carelessly (they are all in the same LinkedList). Explain why this is inefficient in comparison to using a hash map.arrow_forward
- How many linked lists does an m-size hash table have? For the life of me, I can't figure out what a hash function is for. Justify your claim with an example.arrow_forwardPlease help questions below: How good is the provided hash function--are we really getting constant time operations with our hashmap? Explain. What is one other way you could implement the hash function? Anything creative is acceptable in this answer, but justify how your hashing function works. If I have to resize the hashmap to add more buckets, what is th Big-O complexity when you resize? (Explain why) What is 'open addressing' in regards to hash maps and hash tables?arrow_forwardMake an in-depth study guide for Hashing. Hash tables, collision detection techniques, computational complexity measures, and practical uses of hashing are all covered. Give an example of a use case where hashing might be useful. I was wondering if you were familiar with any relevant Java libraries.arrow_forward
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