1. A data structure of a route guidance database used to display a guiding line for guiding a moving body as an object of route guidance on a route, the route guidance database being referred to by a route guidance device to give a guidance display for guiding passage of the moving body on a route to be guided, wherein the route guidance device reads a route search result, which specifies the route to be guided by a combination of nodes and links with position coordinates as a retrieval result from a route search database constructed to include roads expressed by nodes and links with position coordinates, detects position coordinates of a current location of the moving body, and displays a route to be taken by the moving body by referring to the route search result according to the detected position coordinates of the current location of the moving body, the data structure comprising: guiding line shape data, each piece being structured to specify a guiding line for guiding passage of the moving body on the route; and relevant information, each piece being provided in relation to each piece of the guiding line shape data and structured to correlate the guiding line shape data to the nodes and the links in the route search database.