如何：修改主键。
如果要更改列顺序、索引名称、聚集选项或填充因子，则要修改主键。
Modify a primary key if you want to change the column order, index name, clustered option, or fill factor.
主键的命名标准可能不同；如果这样，需要修改代码以符合标准。
The primary key naming standards you use may be different; if so, you will need to change the code to suit.
但是请注意，我们不能修改您声明的主键列或任何其他的键列；在本例中，EMP _ ID是主键列。
Note, however, that we cannot update the primary key columns or any other key columns that you declare; in this case, EMP_ID is a primary key column.
使用此对话框可以创建或修改索引、主键和唯一键。
Use this dialog box to create or modify indexes, primary keys, and unique keys.
如果要更改与主键表中的列相关的列，可修改关系的外键侧。
Modify the foreign key side of a relationship if you want to change which columns are related to columns in the primary key table.
如果要更改与主键表中的列相关的列，可修改关系的外键侧。
Modify the foreign key side of a relationship if you want to change which columns are related to columns in the primary key table.
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