Unique constraints are also called keys.

唯一约束也称为键。

youdao

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

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。

youdao

If you are generating data for columns that have unique constraints, it will likely fail.

如果要为具有唯一约束的列生成数据，则很可能会失败。

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But organizational structures each have their own unique set of constraints.

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And, at the same time, we also know that black representatives, particularly in the House, face a unique set of constraints, because the Republicans basically run the House.

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It is the ability to manage effectively and implement policy under a unique set of political, economic and social constraints that truly determines a leaders success, not a resume.

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