地质图空间数据库两种建库模式比较

Comparison of two construction models of geological map spatial database

1∶5万地质图空间数据库以Coverage数据模型为基础进行建库,1∶25万地质图空间数据库则以Geodatabase数据模型为基础进行建库。通过分析对比山东2个地质图空间数据库的建库实例,可以看出,以Geodatabase数据模型为基础的1∶25万地质图空间数据库,不仅可以将空间数据和属性数据有效地融合在一起,而且能直观反映各空间实体之间的拓扑关系,有效降低数据冗余、减轻建库工作量,有着更好的发展前景。

1 ： 50000 geological map spatial database is constructed based on Coverage data model. 1 ： 250000 geological map spatial database is constructed based on Geodatabase data model. Through the comparative analysis of two Shandong＇s examples of constructing geological map spatial database, we can draws the conclusion： 1 ： 250000 geological map spatial database based on Geodatabase data model,not only combine the spatial data with attribute data together effectively, but also reflect the topological relation between the spatial entities directly, reduce the data redundances effectively, reduce the workload of constructing database effectively. So, 1 ： 250000 geological map spatial database based on Geodatabase data model,have a better development prospects.