14. The invention of claim 8 wherein said database construction is stored on a computer-readable physical storage medium.
8. In a geographic database containing data that represent navigable road segments located in a geographic region, wherein said geographic database includes data entities of a first type and data entities of a second type, wherein each navigable road segment is represented by at least one separate data entity of said first type, wherein each data entity of said first type contains navigable attributes of the road segment represented thereby, and further wherein each name by which a road segment represented by a data entity of said first type is represented by a data entity of said second type, and wherein said data entities of said first type are located together in the geographic database separate from the data entities of said second type, wherein the improvement comprises: in each data entity of said first type that represents a road segment known by a name, an indication contained in said data entity of said first type of the name by which the represented road segment is known.