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foreign key

外键

... 主键（Primary Key）：外键（Foreign Key）：值域（Domain）： ...

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外键约束

外键约束(FOREIGN KEY):外键约束条件参照的是主表的一个或者多个字段的值,通常被外键参照的是主表的主键或者唯一键,当表存在是只能在表的外部定义外键约...

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约束

Oracle使用索引实施PRIMARY KEY约束。 FOREIGN KEY约束(可称引用约束)：在关系数据库中表可通过公共列相关联，该规则控制必须维护的列之间的关系。

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外健

Foreign key(外健):一个表中的一个列或者多个列的集合,这些列匹配某些其他(也可能是同一个)表中的候选键.

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短语

foreign key domain tuple 外来键 ; 外来键值域元组 ; 值域

FOREIGN KEY CONSTRAINTS 约束 ; 外键约束 ; 外键

foreign key table 外部索引键数据表 ; 外键表 ; 外

Foreign Key Mapping 外键映射 ; 将对象间的一个关联映射成表间一个外键引用 ; 外建映射

Foreign-Key 约束 ; 外键啊

FK Foreign Key 外部关键字 ; 一张表要引用另一张表 ; 外键约束

Foreign Key Support 外来键的支援 ; 外键支持

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·2,447,543篇论文数据，部分数据来源于NoteExpress

abstract: In the context of relational databases, a foreign key is a field (or collection of fields) in one table that uniquely identifies a row of another table. In other words, a foreign key is a column or a combination of columns that is used to establish and enforce a link between the data in two tables.

以上来源于: WordNet

Cross-column analysis for foreign key discovery.

用于发现外键的跨列分析。

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Non-identifying optional foreign key relationship.

非标识可选的外键关系。

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All DOC_IDs are unique to meet the foreign key constraints.

所有DOC_ID都是惟一的，以满足外键约束。

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更多双语例句

"The key to long term success in this area is our outreach with foreign governments."

VOA: standard.2010.07.23
But some Democratic lawmakers contend the long-term key to defeating the insurgency in Afghanistan is not to send more foreign troops, but to speed training of Afghan security forces.

VOA: standard.2009.10.25
"It depends on what the Egyptians will do out of it and how they focus the investment foreign policy-wise in key spaces which are relevant to national security issues where Egypt has a greater chance of success."

VOA: standard.2009.11.03

Other key foreign-based players available are the team's captain Mohamed Kallon, Paul Kpaka, Ibrahim Kargbo and Kewullay Conteh.

BBC: Bangura set for Sierra Leone debut
The crash has made it difficult for Kam Air to get landing approval from foreign governments, key to expansion.

FORBES: Lord of the Skies
Pervez Musharraf's military-led government in 2008, Pakistani military and intelligence has retained oversight over key foreign-policy and security matters.

WSJ: Pakistan Edges Toward First Democratic Power Transfer

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