Here is an example using the joined table strategy.
下面是一个使用联合表策略的示例。
Inheritance: Annotations — Single table, joined table, and table per class.
继承：标注——单个表、联合表和按类表。
Joined table: (Optional) the child class is mapped to a table that has a foreign key relationship to the table to which the parent is mapped.
联合表：(可选)将子类映射到与父类映射到的表具有外键关系的表。
Joined table: (Optional) the child class is mapped to a table that has a foreign key relationship to the table to which the parent is mapped.
联合表：(可选)将子类映射到与父类映射到的表具有外键关系的表。
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