Strategy of DGIS with Universal Access to Spatial and Attribute Data Based on COM+
基于COM+技术的空间属性数据一体化存取的DGIS

With the facility of the technique COM+,DGIS can perform real-time update and real-time transmission,provide the framework of object-oriented access and transmission of data,and enhance the security of data.At the same time,it complies with the standard of OpenGIS.Particularly when employing the UDA database technology,the DGIS based on COM+ can realize the universal access to spatial and attribute data.Introduces the experiment with VB 6 and the component ADO in the UDA system to construct the DGIS proposed.