add foreign key的意思|示意

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添加外键


add foreign key的网络常见释义

字段名 然后用命令行 alter table 表名 add foreign key(字段名) references 要关联的表名(要关联的字段名) 回复: 对于有主外键关系的情况,创建数据的顺序是先在主表中添加数据,然后在其它表...

add foreign key相关例句

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。

You'd need to create a new table and also add a new column representing the foreign key to each article to point to a blog.

需要创建一个新表,还要添加指向blog的每个文章的外键。

The article shows one solution that we add triggers to simulate the primary key and foreign key, and then realize cascade update.

本文介绍了一种通过增加触发器来模拟主外键,实现级联更新功能的方法。

Run rake db:migrate to create the SUBSCRIPTIONS table and add foreign key columns to SUBJECTS.

运行 rake db:migrate 以创建 SUBSCRIPTIONS 表并将外键列添加到 SUBJECTS 中。

In this section, the file containing the generated DDLs is further edited to add the required foreign key statements. This is in order to define the tables relationships.

在本节中,我们将进一步编辑包含生成的DDL的文件,以添加所需的外键语句,从而定义表关系。

To do so, click on the Add icon, and then select the database object type Foreign Key Constraint, as shown in Figure 4c.

为此,单击add图标,然后选择数据库对象类型Foreign Key Constraint,如图4c所示。