1. A method of using a source database for forming derived products, wherein the source database contains data that represent geographic features in a region including roads in the region, the method comprising: providing a first set of data from the source database, wherein the first set of data represents at least some of the geographic features in the region and further wherein the first set of data includes attributes suitable for use for providing navigation-related functions; providing a first database product that includes the first set of data, wherein the first database product is used in navigation systems; and providing a second set of data from the source database and a geographic data tool set, wherein the second set of data represents at least some of the geographic features in the region and wherein the tool set is used with the second set of data for developing computer games that represent at least some of the geographic features in the region as part of play scenarios of the computer games.