创建一个外键，以便将这个新表与已有的雇员表相连接。
Create a foreign key to link this new table with the existing employee table.
一列使用一个外键链接到表单上(表中的一行)。
One column links to the form (the row in the table) using a foreign key.
当将数据分解成多个具有外键关系的表时，这尤其重要。
This is important when data is decomposed into multiple tables having foreign key relationship.
然而，不管是父表还是子表，目前还不支持复制外键。
However, it does not currently support copying of foreign keys, either parent or child.
每个一对一的关联在表中任一类中充当外键。
Each one-to-one association is buried as a foreign key in the table of either class.
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.
我们的虚拟外键基于TB_RIGHT表的两个列。
Our virtual foreign key is based on two columns from the TB_RIGHT table.
在清单2中我的location表中，我提供了一个指向account的外键。
In my location table in Listing 2, I provide a foreign key back to account.
在包中显示事实表的外键。
一个一对多关联被映射到“many ”表的一个外键。
A one-to-many association is specifically mapped to a foreign key in the "many" table.
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.
如果DOCUMENTS表有一个 user_id 外键列，则文档模型为 belongs_to :user。
The document model belongs_to :user if the DOCUMENTS table has a user_id foreign key column.
点表（wells_pts）和源表（wells）之间有外键关系。
The point table (wells_pts) has a foreign-key relationship with the source table (wells).
你怎么能在另一个数据库中创建与工作台表的外键？
How can you create a foreign key to a table in another database with workbench?
可以单击此表中的外键所引用的任何表。
You can click any table that this table references by a foreign key.
可以单击此表中的外键所引用的任何表。
You can click any table that this table references by a foreign key.
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