Foreign Key

A primary key of a table can be a foreign key in any other table.

主键的表可以是外键,在任何其他表.

The foreign key constraint is applied when you save the table.

当保存该表时应用外键约束.

A foreign key constraint allows you to define referential integrity between a parent and child table.

外键约束允许您定义父表和子表之间的引用完整性.

Include foreign key columns as properties on entity types.

将外键列作为属性包括在实体类型中.

A foreign key is a constraint that enforces referential integrity.

外键是强制引用完整性的约束.

Creating a relationship also creates a foreign-key constraint that is added to the child table.

建立关联性的同时,也会建立要加入至子资料表的外部索引键条件约束.

Failed to enable constraints. One or more rows contain values violating non-null, unique, or foreign-key constraints.

未能启用约束. 一行或多行中包含违反非空 、 唯一或外键约束的值.

A foreign key constraint referencing this table was dropped or changed.

已删除或更改了引用此表的外键约束.

Filters that are created for each foreign key or Boolean fields.

可提供针对每个外键或针对布尔型字段创建的筛选器.

With independent associations, you cannot use the foreign key property.

使用独立关联, 则不能使用外键属性.

Creates both a relation and foreign key constraint ( see below for descriptions ).

建立关联与外部索引键条件约束 ( 请参阅以下描述 ).

The foreign key side is also denoted by a key symbol.

外键方也由键符号表示.

A foreign-key constraint can implement referential integrity between parent and child tables.

外部索引键条件约束可于父和子资料表之间实作参考完整性.

With foreign key associations , you can use both Methods: To change create or modify relationships.

通过外键关联, 可以使用两种方法更改创建或修改关系.

Delete a foreign key constraint when you want to remove the requirement to enforce referential integrity.

如果想要移除对强制引用完整性的要求,则可删除外键约束.