Foreign key definitions in the DDL.

DDL中的外码定义。

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。

Adding or dropping unique, distinct, or foreign key constraints.

添加或删除惟一、独特或外键约束。

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。

A foreign key user_id needs to be added to the SUBSCRIPTIONS table.

需要将一个外键user _ id添加到subscriptions表中。

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。

A foreign key subscription_id needs to be added to the SUBJECTS table.

需要将一个外键subscription _ id添加到subjects表中。

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。

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。

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。

Each one-to-many association is buried as a foreign key in the table of the many class.

每个一对多的关联在表中多个类中充当外键。

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。

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。

For example, the foreign key to the date table is not repeated for every keyword of a document.

例如，日期表的外键对于一个文档的每个关键词不会重复。

You can use similar definitions to define foreign key constraints on usa.item_supplied nickname.

可以使用类似的定义来定义usa . item_supplied昵称上的外键约束。

For foreign key creation, another table with a primary key with a compatible data type is required.

对于创建外键，则需要另外一个具有主键的表，且该主键具有兼容的数据类型。

During the foreign key enforcement, the server USES the sequential scan, instead of foreign key index.

在外键加强过程中，服务器使用顺序扫描，而不是外键索引。

The foreign key has not only an identifier to identify a record, but also a type to identify the table.

外键不仅具有标识记录的标识符，而且还具有标识表的一个类型。