• The database backup backs up all pages, then it scans the logs, grabbing pages needed to cover transactions that have taken place since the backup started. In this way it has a consistent backup while allowing users to still work on the database. The full backup does not change or alter the log, which is why you need log backups to clear the log. And this is why the log backup can be run at the same time.

    Would you do this? I have seen scheduled conflict, though it's not likely you would purposely do this.