database normalization

基本解释

Volumes can and have been written about the important topic of database normalization.
數據庫標準化是一個重要課題，完全可以就其寫出許多著作，而且已經有了許多相關著作。
Classic database normalization would say to create a Pizza table, and then a many-to-many table relating pizza IDs to topping IDs.
典型的數據庫標準會建議需要先創建一張比薩表，然後再創建一張將比薩 ID 與澆頭 ID 關聯起來的多對多表。
To demonstrate, let's apply a little database normalization to the previous example, splitting the owner field of PhoneNumber into a separate person table.
作爲縯示，我們將一個小的數據庫槼範化（normalization）應用於上一示例，將 PhoneNumber 的 owner 字段分割到單獨的 person 表中。