The type from which a subtype inherits attributes is known as its supertype.
子类型所继承的属性来自哪个类型，该类型就被认为是这个子类型的超类型。
Understand how to create an entity supertype, subtypes, and associated services to allow the processing of each.
了解如何创建实体超类型、子类型和相关服务。
Entities that share some attributes, including an identifier (primary key), but not others may be modelled as having a common supertype.
一些实体具有某些共同的属性，比如标识符(主键)，而其他属性不同，这些实体可能具有共同的超类型。
ST_Geometry, which is the supertype to all geometry types; as a function that applies to all geometry types, it is properly a method of the supertype.
作为一个应用于所有几何类型的函数，它实际上是超类型的一个方法。
Normalization decisions are finalized in the logical data model resulting in the final normalized representation of entity-to-entity relationships as well as supertype-to-subtype hierarchies.
规范化决定在逻辑数据模型中得以完成，并导致实体-实体关系与超类型-子类型层次关系的最终规范化表示。
Remember, the supertype relation is reflexive.
记住超类型的关系是反身的。
ArrayStoreException - the runtime type of the specified array is not a supertype of the runtime type of every element in this collection.
如果指定数组的运行时类型不是集合中每个元素运行时类型的父一级类型时抛出。
ArrayStoreException - if the runtime type of the specified array is not a supertype of the runtime type of every element in this collection.
如果指定数组的运行时类型不是集合中每个元素运行时类型的父一级类型时抛出。
ArrayStoreException - if the runtime type of the specified array is not a supertype of the runtime type of every element in this collection.
如果指定数组的运行时类型不是集合中每个元素运行时类型的父一级类型时抛出。
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