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。
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。
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。
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