An Expansible Design of Highway Spatial Database

This paper proposes to make a spatial database that have an excellent expansibility for the road bureau of Yunnan province. The proposal is discussed in five aspects: the defined data-layer of the road data, the design of the relation of the road entity, the expansion of the managed subject, the expansion of the road graphic attribute and the graphic dynamic update by dynamic segmentation. Last, some useful advice are given about the system of management and the process of data collection.