||Digital data are the key for the plain utilization of potential already available with geoprocessing technologies. Information that interest urban planners came from several sources and information technologies beside integration and manipulation permit visual investigation of spatial data in diverse aspects, from witch the most evident but not less effective is a map, tool that let us correlate a great variety of qualitative and quantitative data, for organization, interpretation, evaluation, presentation and communication. The work intend to build a urban digital database from Salvador and provide architects, geographers and urban planners a tool to visualize urban information in an easy way. It is structured like a hypermedia atlas using concepts from cartographic modeling. Information is organized in general and specific themes - physical environment, socioeconomic, land use, habitation, infra-structure, etc - that can be visualized alone or coexistent with others themes. Scale of visualization can be various.