# Copyright and licensing information ## Documentation licensing Percona Server for MySQL documentation is (C)2009-2023 Percona LLC and/or its affiliates and is distributed under the [Creative Commons Attribution 4.0 International License](https://creativecommons.org/licenses/by/4.0/). ## Software license *Percona Server for MySQL* is built upon MySQL from Oracle. Along with making our own modifications, we merge in changes from other sources such as community contributions and changes from MariaDB. The original SHOW USER/TABLE/INDEX statistics code came from Google. Percona does not require copyright assignment. See the COPYING files accompanying the software distribution.