新增、移除及管理主索引键和外部索引键。

Add, remove, and manipulate primary keys and foreign keys.

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如果该主索引键已存在，就会掷回这个例外状况。

If the primary key exists, this exception is thrown.

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在方格的下方，选择组成资料表主索引键的资料行。

In the grid beneath, choose the columns contributing to the table's primary key.

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您也可以从更新指令码置放主索引键、索引和唯一的条件约束。

You can also drop primary keys, indexes, and unique constraints from the update script.

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您也可以从更新指令码置放主索引键、索引和唯一的条件约束。

You can also drop primary keys, indexes, and unique constraints from the update script.

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