允许您定义表的主键、惟一键和外键。

The keys view allows you to define primary, unique, and foreign keys for the table.

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keys视图—允许定义主键、惟一键和外键。

Keys view a "Allows defining primary keys, unique keys, and foreign keys."

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keys视图允许定义表的主键、惟一键和外键。

The keys view allows you to define primary, unique, and foreign keys for the table.

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