DATABASE SYSTEM CONCEPTS LCPO
7th Edition
ISBN: 9781265586577
Author: SILBERSCHATZ
Publisher: MCG
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Chapter 16, Problem 16E
Program Plan Intro
B+- Tree Index:
The B+ tree index is used for speeding up retrieval of data. It is a pointer to data.
Following the pointer chains, the value is either found or not found.
- The data pointers point to the leaf nodes. A leaf node has an additional pointer.
- Each node is filled at least half except the root node. It must have two entries minimum.
- Searching of a value starts at the root node and follows pointer chains till it does not reach a leaf node.
- The leaf nodes and internal nodes have key values which are used for searching for entries in the index.
- The tree is balanced because each path from the root node to the leaf node is similar in length. The same number of nodes are needed for each search.
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Chapter 16 Solutions
DATABASE SYSTEM CONCEPTS LCPO
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