'updates/3.00-to.x.xx.mysql' for the required MySQL updates.
- Renamed some "author" fields to "uid" fields for sake of consistency.
- Fixed the coding style of some PHP files.
- Fixed the moderation queue (fairly untested though).
- Re-introduced the temporary SQL table in _node_get().
- Added a missing 'auto_increment' to 'updates/3.00-to-x.xx.mysql'.
range of databases including MySQL, PostgreSQL, MSSQL, and others.
For additional information and an 'how to upgrade', check the mails
sent to the mailing list.