As the combination of Data Warehouse and GIS

Spatial Data Warehouse is a large database designed to support the needs of decision making. For this purpose

it has some new features that are different from those of the traditional database

such as integrated

subject oriented

time and spatial variant. The emergence of Spatial Data Warehouse extends the scope of the applications of GIS and supports the research on global change

development of region and complex analysis of commerce. The system of Spatial Data Warehouse mainly includes four components. These are data source

tools of data transformation

warehouse

and analytical tools. All of these components involve some new and key technologies. We must find answers about how to define an efficient spatial data structure

integrate various data source

and find information from raw data. They are critical to the success of building spatial data warehouse.\;From emergence system architecture to building an application of Spatial Data Warehouse

this article discusses this very new GIS application.