Exercise 3: Multi-way Trees A way to reduce the height of tree and ensure balance is to allow multiple children of nodes. In your class you learned 2-3 trees which allows up to 2 keys in a node, and the number of children is equal to the number of keys + 1. B-trees extend this concept to any arbitrary number of keys (usually number of keys is even and number of children (equal to number of keys+1) is odd). Assume we want to design a 5-way B-Tree. This will mean that there can be maximum 4 keys in a node, and if the number of keys becomes 5, we can split it into two (the same way we split 2-3 tree when number of keys becomes 3). Design a 5-way B-tree. Starting with an empty tree, insert the following keys in order. 2.3.5. 7. 10. 50. 22. 44. 45. 55. 66. 68. 70. 17. 6. 21. 67

Exercise 3: Multi-way Trees A way to reduce the height of tree and ensure balance is to allow multiple children of nodes. In your class you learned 2-3 trees which allows up to 2 keys in a node, and the number of children is equal to the number of keys + 1. B-trees extend this concept to any arbitrary number of keys (usually number of keys is even and number of children (equal to number of keys+1) is odd). Assume we want to design a 5-way B-Tree. This will mean that there can be maximum 4 keys in a node, and if the number of keys becomes 5, we can split it into two (the same way we split 2-3 tree when number of keys becomes 3). Design a 5-way B-tree. Starting with an empty tree, insert the following keys in order. 2.3.5. 7. 10. 50. 22. 44. 45. 55. 66. 68. 70. 17. 6. 21. 67

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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