Problem Statement
Which of the following data structures is preferred in the implementation of a database system?
Explanation
B plus trees are the most preferred data structure for database indexing because they are optimized for systems that read and write large blocks of data. All data records are stored in leaf nodes, making range queries very efficient.
B plus trees have several advantages over B-trees and other structures. They provide better sequential access because all leaf nodes are linked together. They support efficient range queries as you can traverse leaf nodes sequentially. The internal nodes only store keys for navigation, allowing more keys per node and reducing tree height. This minimizes disk I/O operations which is crucial for database performance.
Code Solution
SolutionRead Only
// B+ Tree characteristics: // 1. All data in leaf nodes // 2. Internal nodes only have keys // 3. Leaf nodes linked for sequential access // 4. Better for range queries // Example B+ Tree structure: // [10, 20] // / | \ // [5] [15] [25,30] // | | | | // D1 D2 D3 D4 // D1, D2, D3, D4 are data records // Leaf nodes linked: D1 -> D2 -> D3 -> D4 // Range query [10-25] is efficient: // Start at D2, traverse linked list to D3 // Why not BST/AVL? // - Not optimized for disk access // - No sequential leaf traversal // - Higher tree height for same data
Practice Sets
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