Cross-column analysis for foreign key discovery.
用于发现外键的跨列分析。
Non-identifying optional foreign key relationship.
非标识可选的外键关系。
Non-identifying one-to-one foreign key relationship.
非标识一对一外键关系。
Creating a foreign key constraint with index disabled.
创建一个索引禁用的外键约束。
It is similar to a foreign key in a relational database.
它类似于关系数据库中的外键。
Alternative way of creating a primary key and foreign key.
另外一种创建主键和外键的方式。
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。
A foreign key attribute, is automatically created in PROJECT.
在PROJECT中会自动创建一个外键属性COMP _ CODE。
Missing join predicates, but only if a foreign key is defined.
丢失连接谓词，只在定义了外键的情况下。
This makes it virtually impossible for us to create a foreign key.
这使得我们几乎不可能创建外键。
Creating a foreign key using the foreign key tool is also very easy.
通过Foreign Key工具创建一个外键也是非常容易的。
One column links to the form (the row in the table) using a foreign key.
一列使用一个外键链接到表单上(表中的一行)。
Our virtual foreign key is based on two columns from the TB_RIGHT table.
我们的虚拟外键基于TB_RIGHT表的两个列。
In my location table in Listing 2, I provide a foreign key back to account.
在清单2中我的location表中，我提供了一个指向account的外键。
Similarly if two tables are connected via a foreign key, they are connected.
与此类似，如果两张表通过一个外键连接起来，我们也称其为连接的。
Create a foreign key to link this new table with the existing employee table.
创建一个外键，以便将这个新表与已有的雇员表相连接。
You don't need to worry about messing around with the primary key or foreign key.
您无需担心处理主键或外键的麻烦。
Data type of primary key columns, foreign key columns, and columns used on indexes.
主键列、外键列和索引上使用的列的数据类型。
In the foreign keys page (shown in Figure 3), add a new foreign key ord_cust_key.
在外键页面中(如图3所示)，增加一个新的外键ord_cust_key。
Each one-to-one association is buried as a foreign key in the table of either class.
每个一对一的关联在表中任一类中充当外键。
It works at a basic level with MySQL, but it won't pick up foreign key relationships.
它基本上能用于MySQL，但不能提取外键关系。
A one-to-many association is specifically mapped to a foreign key in the "many" table.
一个一对多关联被映射到“many ”表的一个外键。
In this example, we will use the name C0989623 as the name of the foreign key (Figure 6).
在本例中，我们将使用名称C0989623作为外键的名称(图6)。
This next section of code adds all of the foreign key links seen in the previous diagram.
下面的代码将添加上图中的所有外键链接。
One-to-one relationships and one-to-many relationships are implemented using a foreign key.
一对一关系和一对多关系使用一个外键来实现。
To create the correct mapping, the tool has to know that ACCOUNT_ACCOUNTID is a foreign key.
要创建正确的映射，映射工具必须知道 ACCOUNT_ACCOUNTID 是个外键。
Minimize the triggers, CHECK and foreign key constraints, and generated columns for the table.
尽量减少表上的触发器、检查和外键约束以及生成的列。
Run rake db:migrate to create the SUBSCRIPTIONS table and add foreign key columns to SUBJECTS.
运行rakedb:migrate以创建SUBSCRIPTIONS表并将外键列添加到SUBJECTS 中。
This is important when data is decomposed into multiple tables having foreign key relationship.
当将数据分解成多个具有外键关系的表时，这尤其重要。
Therefore, you need to map the foreign key attribute in Employee to the Department's primary key.
因此您需要将Employee的外部关键字属性，与Department的主关键字映射上。
应用推荐