From Fedora Project Wiki
Database Servers
Fedora includes both the MySQL and PostgreSQL database servers.
mysql
MySQL has been updated to 5.1.31.
postgresql
Fedora 11 includes version 8.3.6 of postgreSQL.
A dump/restore is not required for those running 8.3.X. However, it is recommended to REINDEX all GiST indexes after the upgrade.