... Concrete Table Inheritance 具体表继承 Single Table Inheritance 单表继承 Class Table Inheritance 类表继承 ...
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How to access parent attributes via single table inheritance?
如何通过单表继承访问父属性？
Inheritance is limited: with ActiveRecord, I'm forced to use a mapping strategy called single table inheritance (see Resources), which is not always optimal.
继承也受到限制：使用ActiveRecord时，我被迫使用单表继承映射策略，而该策略并不总是最佳选择。
Inheritance: Annotations — Single table, joined table, and table per class.
继承：标注——单个表、联合表和按类表。
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