TerraFly is an interactive vehicle for flying over remote sensed imagery from different regions of the world. The extensive database used to fuel this flight is provided by Sem-ODB, a highly efficient semantic database management system.

TerraFly uses a variety of remote sensed data, some of which include several spectral sensors. While the user flies over the remotely sensed imagery, a geographical map of the area he is flying over is displayed simultaneously so that the user can identify his current location on the remote sensed imagery. Users can fly over the color composite image of their choice by selecting any three sensor combinations and the system also gives the user control over the intensity of the colors in the imagery. A Geographical Names Information System Database is also included so that the user can select the name of locale and be instantly transported to that area on the remotely sensed image. In addition, users can virtually zoom into an area by switching to a higher resolution data set.