This state of affairs leads to redundancy in the table: for example, we are told three times that A1 Pizza offers Stuffed Crust, and if A1 Pizza starts producing Cheese Crust pizzas then we will need to add multiple rows, one for each of A1 Pizza's delivery areas.
这导致了该表中的数据冗余：例如，A1 Pizza供货 Stuffed Crust就重复了3遍；如果A1 Pizza开始生产Cheese Crust pizzas那么向表中增加多行，A1 Pizza的每个供货地区都需要一行。