In an obvious extension -- any file that you create and delete the very same day will never be backed up and will be lost forever.what I said above :for instance if a file has been created on Monday and backed up the same night, then if the same file gets deleted on Tuesday
assuming the daily backups are incrementals or differentials, means they will have the changes on the files and folders, for instance if a file has been created on Monday and backed up the same night, then if the same file gets deleted on Tuesday, we'll still have it on the Incremental backup done on Monday Night.
On Saturday/Sunday , the full backup aslo will have the deleted file on it.