Implementation alternatives for an integrated 3D information model

Abstract

The 3DIM (3D Integrated Model) is an information model under development which intends to integrate geographic features on the earth surface as well as above and below the earth surface into a common semantic-geometric model. We present and discuss two alternative implementations of the information model for DBMS. In the first alternative semantics are separated from geometry and organized into two table groups while in the second alternative semantic tables incorporates the geometry of the objects.