... 逻辑节点模型(logical node model) 数据类模型(data class model) 数据集类模型(data set class model) ...
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Data set class model 数据集级别模型
Some semantics can be lost during the transformation from an LDM to a class model because LDMs hold richer data semantics (as in, primary keys) than class models.
在从LDM转换到类模型时，有些语义可能会丢失，因为LDM的数据语义比类模型更加丰富(例如主键)。
Listing 1 gives a simple example of a service interface, and a root data model class.
清单1给出了一个服务接口和根数据模型类的简单例子。
A common (canonical) UML class model of the main data items (the business entities) and their relationships.
主要数据项(业务实体)及其关系的通用(规范的)uml类模型。
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