• 1. add primary key: 向表中增加一个主键 | 为表添加一个主键

• 1.Don't worry about the primary key "leaking" through - you'll see how to add a more descriptive label in the next section.
  不用担心“泄漏”主键—在下一节将会看到如何添加更具描述性的标签。
  dict.yoduao.com
• 2.The article shows one solution that we add triggers to simulate the primary key and foreign key, and then realize cascade update.
  本文介绍了一种通过增加触发器来模拟主外键，实现级联更新功能的方法。
  dict.yoduao.com
• 3.If the source table doesn't include a primary key or clustered index, the tool can automatically add a ROWID column and set the clustered index on the column during the conversion.
  如果源表不包含主键或聚簇的索引，该工具可以自动添加rowid列和列上的聚集的索引设置转换过程中。
  dict.yoduao.com

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