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数据库应用 B+ 树

本项目记录了我是如何一步一步实现用于数据库底层的 B+ 树(Java)的

本项目实现了一些比较常用的 B+ 树, 共有以下几个版本

版本 插入 删除 查找 修改 持久化 其他特点见文档
V1 × × × V1版本文档
V2 × × V2版本文档
V3 × V3版本文档
V4 V4版本文档
  • V1: 简化版本, 节点页使用数组实现, 只实现了部分功能, 实现方式也比较简单, 主要用于理论验证
  • V2: 过渡版本, 节点页使用链表实现, 实现上只考虑了唯一索引, 还不具备通用性
  • V3: 完备版本, 实现了几乎全部功能, 实现方式上考虑了各种场景, 对细节进行了优化
  • V4: 数据库定制版本, 实现将数据持久化, 实现上考虑了数据库的各种场景

运行环境

  • Java
    • SDK: 1.8
    • 语言级别: 8
  • Maven: 3.8.1

参考文献:

生态

  • 基于此项目实现的关系型数据库: EasySQL

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