With this approach you create one table per class, the attributes of which are the OID and the attributes that are specific to that class.

使用这种方法，为每个类创建一张表，它的属性是OID和特定于该类的属性。

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Mixing strategies such as "Table per Subclass" embedded in "Table per class Hierarchy" so that you can take advantages of different strategies.

采用混合策略，例如“每个类层次一张表”中嵌入“每个子类一张表”，这样可以利用不同策略的优势。

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Table per-class: (Optional) Each concrete subclass is mapped to a table and contains columns for super class attributes.

按类表：(可选)每个具体的子类映射到一个表，并且包含超类属性的列。

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Table per-class: (Optional) Each concrete subclass is mapped to a table and contains columns for super class attributes.

按类表：(可选)每个具体的子类映射到一个表，并且包含超类属性的列。

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