Nested inside the customerinfo object are two objects that define the customer id (cid) and name.
customerinfo对象内部嵌套了两个对象,它们定义客户id (cid)和名称。
The customer table has the column cid as a relational column and key value which represents customer id.
customer表包含一个作为关系列的cid列,以及表示顾客id的键值。
Info XML column has an attribute Cid which again represents the customer id.
info xml列具有一个属性Cid,该属性也表示顾客id。
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