This article described three approaches to implementing a surrogate key as primary key.

本文描述了实现作为主键的代理键的三种方法。

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This surrogate column can be designated the primary key column.

可以将该代理列指定为主键列。

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First, you usually want to have a (surrogate) object identifier that maps to the primary key of the corresponding database table.

首先，您通常要具有一个映射到对应数据库表主键的(代理)对象标识符。

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