A logical data model takes this a step farther, analyzing the detailed structure of the data, including relationships, sub-typing, attribution and containment.
逻辑数据模型在此基础上更进一步，分析数据的详细结构，包括关系、子类型、属性和包含关系。
2
It also applies the model to appraise the quality of hydraulic excavator, and sorts and selects the synthetic attribution of hydraulic excavator. The result consists with practice.
应用该模型对液压挖掘机质量进行评价，对挖掘机的综合属性值进行排序和择优，结果与实际相符。
3
Other duties will include periodic evaluation of model portfolio and performance attribution;