Currently, the following index structures exist in BaseX:
===Structural Indexes===
Structural indexes will always be present and cannot be dropped by the user:
* '''Tag/Attribute Name Index'''
* '''Document Index'''
: This index caches references to all document nodes in a database. It provides fast access to single documents in large database instances.
===Value Indexes===
Value indexes can be dropped and created by the user:
* '''Text Index'''