# 64. B-Tree Indexes

- [64.1. Introduction](https://docs.postgresql.tw/14/internals/b-tree-indexes/introduction.md)
- [64.2. Behavior of B-Tree Operator Classes](https://docs.postgresql.tw/14/internals/b-tree-indexes/behavior-of-b-tree-operator-classes.md)
- [64.3. B-Tree Support Functions](https://docs.postgresql.tw/14/internals/b-tree-indexes/b-tree-support-functions.md)
- [64.4. Implementation](https://docs.postgresql.tw/14/internals/b-tree-indexes/implementation.md)