What are B-trees and B+ trees?

By vivek kumar in 20 Jul 2024 | 09:07 pm
vivek kumar

vivek kumar

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What are B-trees and B+ trees?

20 Jul 2024 | 09:07 pm
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Prince

Prince

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Posts: 557
Member since: 20 Jul 2024

B-trees and B+ trees are types of self-balancing search trees commonly used in databases and file systems to manage large amounts of data that cannot fit entirely in memory. They are designed to minimize disk I/O operations.

B-Trees


  • Balanced: All leaf nodes are at the same level.
  • Multiple Keys: Each node contains multiple keys, which makes it efficient for disk reads.
  • Node Degree: Each node has between t and 2t - 1 keys (except the root, which can have fewer than t keys).
  • Children: Internal nodes (non-leaf nodes) have between t and 2t children.

  • Balanced: Like B-trees, all leaf nodes are at the same level.
  • Data in Leaves: All actual data values are stored in the leaf nodes.
  • Linked Leaves: Leaf nodes are linked together in a linked list to provide ordered access to the data.
  • Internal Nodes: Only store keys and not actual data values, which allows for better space utilization.

    • 20 Jul 2024 | 11:14 pm
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