What actions affect files, DB, or both?

  • Registering a new user – database
  • Adding a post or comment – database
  • Changing to a new theme – database(yes)
  • Changing a theme’s settings – database
  • Installing or removing a plugin – file system,database
  • Activating, or deactivating a plugin – file system,database
  • Updating a plugin – file system and database (DB structure may change if plugin has custom tables registered and in the new version if it has structure changes)
  • Changing a plugin’s settings – database
  • Uploading media – file system and database
  • Editing custom files not included in a theme or plugin – file system(this depends on the actions you are taking)
  • Upgrading WordPress – file system,database