Composite Entity Pattern 组合实体模式
The central meaning shared by these nouns is . one of the individual parts of which a composite entity is made up.
这些名词共有的中心意思是。一个组合整体中的单个组成部分之一。
Multiple attributes in the entity may be combined to form a composite primary key.
实体中的多个属性可以组合成一个复合的主键。
Collections can either model value types (element or composite-element) or entity reference types (one-to-many or many-to-many associations).
集合可以是值类型的(元素或组合元素)，也可以是实体引用类型的(one - to - many或many - to - many关联)。
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