Model synchronization will always be a challenge whenever you perform model transformation between different domains with different semantics.
只要您在具有不同语义的不同领域间进行模型转换，模型同步都将是一个挑战。
2
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)。
3
Some semantics may be lost during transformation from LDM to business items because LDM holds richer semantics than business items.