The Location table contains a foreign key (region_id) that corresponds to primary key of the region table.

location表包含一个外键(region_id)对应region表的主键。

youdao

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。

youdao

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。

youdao