How to set primary key with duplicate values based on main primary key?

如何基于主密钥重复值，主键设置？

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You can set primary keys, create and modify queries, add and remove relationships, and set a concurrency column.

您可以设置主要关键字，创建并编辑查询，添加并删除关系，以及设置一个同步列。

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You can drag and drop fields to make new tables, and to move fields between tables. You can also rename the tables, and set primary key fields.

既可以拖放字段形成新表，也可以在两表之间移动字段，还可以重命名表和设置主键字段。

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Women bear children. Well, around that fact comes a whole set of rights and obligations and duties, primarily to the family that have to be primary.

女人要生孩子，好，围绕这个事实,衍生出一整套权利，责任和义务，这些主要是对家庭而言，家庭是首要目标。

普林斯顿公开课 - 人性课程节选

Another major unanswered question is what date will the South Carolina Democratic Party set its primary?

CNN: South Carolina GOP moves up primary, adds to 2008 scramble

After that, he will go to New Hampshire, which has set its primary for January 27, before heading home to Boston and a hometown rally.

CNN: Blasting Bush, Kerry makes it official

"It may not be appropriate to use calculators for the whole of the maths test paper, but it is a retrograde step to ban them completely as it will diminish the skills set for primary pupils and leave them floundering in secondary school".

BBC: Government bans calculators from primary maths tests