B+-Trees 1. 2 Motivation for B+ Trees Reduce the storage of internal nodes to reduce disk access Link the leaves to make traversing the tree faster Reward:

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Presentation transcript:

B+-Trees 1

2 Motivation for B+ Trees Reduce the storage of internal nodes to reduce disk access Link the leaves to make traversing the tree faster ***Reward***: What is the advantage of B-Tree compared with B+tree?

B+-Trees3 Inserting into B+ tree Insert 9

B+-Trees4

5 Inserting into B+ tree Insert 3

B+-Trees6

7 Deleting from B+ tree Delete 8, assuming that right sibling is checked for redistribution

B+-Trees8

9 Deleting from B+ tree Insert 8, assuming that left sibling is checked for redistribution

B+-Trees10

B+-Trees Insert 46, then delete 52

B+-Trees12

B+-Trees Delete 91

B+-Trees14

B+-Trees15 ***Reward*** 10-8 successively deleting the data entries with keys 32, 39, 41, 45, and 73

B+-Trees16