rating_id	int	5	not_null?primary_key?unsigned?auto_increment
rating_item_id	int	5	not_null?unsigned
rating_type	string	1	not_null
rating_user	int	5	not_null?unsigned
rating_vote	int	1	not_null?unsigned
rating_datestamp	int	10	not_null?unsigned
rating_ip	string	20	not_null
