Suppose the search field is V = 9 bytes long, the disk block size is B = 512 bytes, a record pointer Pr is 7 bytes, and a block pointer Pb is of 6 bytes. Each B-tree node can have at most p tree pointers, p- 1 data pointers and p - 1 search key field values. These must fit into a single disk block if each B-tree node is corresponds to a disk block. What is the average number of block pointers at 2d level of B-tree, given that B-tree is 69% full.

Suppose the search field is V = 9 bytes long, the disk block size is B = 512 bytes, a record pointer Pr is 7 bytes, and a block pointer Pb is of 6 bytes. Each B-tree node can have at most p tree pointers, p- 1 data pointers and p - 1 search key field values. These must fit into a single disk block if each B-tree node is corresponds to a disk block. What is the average number of block pointers at 2d level of B-tree, given that B-tree is 69% full.

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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