The algorithms also check properties of objects that are higher in the object hierarchy, checking up the chain of parents to the top object.
规则同样会检查对象层级结构中上层对象的熟悉，检查顶级对象与父类的连锁关系。
If you would like to rename this method, a check of all classes in the inheritance hierarchy is needed to find all positions in the code which should be changed.
如果你要重命名这个方法，必须检查继承层次中的所有类，以找到应该做出改变的所有位置。
For our second strategy (one table per class hierarchy), you'll have to define your integrity using check constraints.
对于第二个策略(每个类层次结构一个表)，您必须用检测约束定义您自己的完整性。
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