# 63. B-Tree Indexes

- [63.1. Introduction](/13/internals/b-tree-indexes/introduction.md)
- [63.2. Behavior of B-Tree Operator Classes](/13/internals/b-tree-indexes/behavior-of-b-tree-operator-classes.md)
- [63.3. B-Tree Support Functions](/13/internals/b-tree-indexes/b-tree-support-functions.md)
- [63.4. Implementation](/13/internals/b-tree-indexes/63.4.-implementation.md)