Abstract—the symbolic database system is the basic tool of
geospatial data representation in map. In the past, many
researchers didn’t focus on 3D map symbols but mostly on 2D
map symbols. In 3D GIS, all geographic phenomena and spatial
entities need to be represented by the corresponding 3D symbol
models. So establishing a complete set of 3D map symbolic
database with expression becomes critical in technology
development of 3D map visualization.