# ALTER

- [ALTER DATABASE](/url/mariadb.com/docs/server/reference/sql-statements/data-definition/alter/alter-database.md): Modifies a database, changing its overall characteristics.
- [ALTER FUNCTION](/url/mariadb.com/docs/server/reference/sql-statements/data-definition/alter/alter-function.md)
- [ALTER LOGFILE GROUP](/url/mariadb.com/docs/server/reference/sql-statements/data-definition/alter/alter-logfile-group.md)
- [ALTER SERVER](/url/mariadb.com/docs/server/reference/sql-statements/data-definition/alter/alter-server.md)
- [ALTER TABLE](/url/mariadb.com/docs/server/reference/sql-statements/data-definition/alter/alter-table.md)
- [Online Schema Change](/url/mariadb.com/docs/server/reference/sql-statements/data-definition/alter/alter-table/online-schema-change.md)
- [ALTER TABLESPACE](/url/mariadb.com/docs/server/reference/sql-statements/data-definition/alter/alter-tablespace.md)
