Research into spatial data integration——Taking the building of the spatial data warehouse as an example

With the growing complexity of spatial data, present data database and data analyzing tool can't give enough help to decision-making, so it is necessary to establish many spatial data warehouses with much history data and on different scale. During the process of spatial data warehouses building, data integration is an important step and especially spatial data integration is a rough job. Based on present database, spatial data warehouse and spatial data integration, the article discusses thoroughly about the process of building the model of the spatial data warehouse and brings out systematically two aspects on data integration orientated to spatial data warehouse: one about data integration of different data resources, the other about data integration of different scale.