This is the sort of information that should be captured by your conceptual model, which in the object world is modeled via a UML class model.
这是应该由概念性模型捕捉的一种信息，在对象世界中，它是通过UM L类模型建模的。
Base class for attributes that define how properties of types in the object layer are mapped to the properties of entity types or complex types in the conceptual model.
特性的基类，这些特性定义如何将对象层中的类型映射到概念模型中的实体类型和复杂类型。
Base class for attributes that define how properties of types in the object layer are mapped to the properties of entity types or complex types in the conceptual model.
特性的基类，这些特性定义如何将对象层中的类型映射到概念模型中的实体类型和复杂类型。
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