Best practices for updating data base
This model is significantly different from a highly normalized/transactional SMP database.
Because of this, the following best practices are recommended.
Word Press won't attempt to create the new files directly if they won't have the correct ownership.
If it doesn't work, or you just prefer to be more hands-on, you can follow the manual update process.
If you are an experienced SQL database developer, we strongly recommend that you review this chapter before you begin developing your Amazon Redshift data warehouse.
If you are new to developing SQL databases, this is not the best place to start.
WARNING: The upgrade process will affect all files and folders included in the main Word Press installation.
This includes all the core files used to run Word Press.
Complete instructions to make a backup can be found in the Word Press Backups section of the Codex.