Thus, a PhoneNumber object has a member for each of the fields in its database row.

因此，对于数据库行中的每个字段，PhoneNumber对象都具有一个成员。

Finally, note that there's no need to create a field object in PhoneNumber for the id field.

最后注意，无需在PhoneNumber中为id字段创建字段对象。

Either the PhoneNumber field or the EmailAddress field stores contact details, depending on how the request is received.

PhoneNumber字段或EmailAddress字段存储联系人详细信息，具体取决于请求的接收方式。

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。

The type system already contains types for phonenumber and the other annotation types needed by the sample regular expression annotator rules. Listing 3 illustrates the two new type definitions

这个类型系统已经包含了 phonenumber 类型和示例正则表达式注释器规则所需的其他注释器类型。