外键 [
wài jiàn]
foreign key
- 默认情况下,实体数据模型向导中的“加入外键列”选项处于选中状态。
The Include Foreign Key Columns option in the Entity Data Model Wizard is selected by default. - 注意:命令执行过程中可能提示外键警告信息,没有大碍忽略即可(安全忽略)。
Note that the command may output warnings about altering foreign keys on the tables, which are safe to ignore. - 关系型数据库的逻辑模型进一步规范化这些实体和关系,并形成带有主外键约束的表。
The logical model for a relational database normalizes the entities and relationships into tables with foreign key constraints.
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