Data warehouse is used for making decision management, data model is one of the centerproblem in the research of data warehouse.
数据仓库用以支持经营管理中的决策制订过程,数据模型是数据仓库研究的核心问题之一。
2
This paper applies spatial reasoning method to spatial relational analysis by studying the centerproblem of GIS-spatial topological relationship.
本文通过研究GIS中的核心问题——拓扑空间关系,将定性空间推理的方法应用到空间关系的分析中。
3
The physically economic period is measure by actual citizen's total output value of, the economic period is the centerproblem of the macroscopic economics concern then.