Classic database normalization would say to create a pizza table, and then a many-to-many table relating pizza IDs to topping IDs.

典型的数据库标准会建议需要先创建一张比萨表，然后再创建一张将比萨id与浇头id关联起来的多对多表。

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Note that this is an extremely informal discussion of the topic of database normalization, and does not cover all of the issues in depth.

注意这是对数据库规范化的一个非常不正式的讨论，并且也没有深入讨论所有的主题。

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To demonstrate, let's apply a little database normalization to the previous example, splitting the owner field of PhoneNumber into a separate person table.

作为演示，我们将一个小的数据库规范化(normalization)应用于上一示例，将PhoneNumber的owner字段分割到单独的person表中。

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