Wherever they might come from the data are centralized in a database called TRS (Tiramisu Repository Service) based on PostgreSQL/PostGIS.  Practically, the (TRS) is a database with geographical capabilities, working in a client-server architecture, in which different tools store and read data. The inner structure is made of data tables allocated to divisions (the schemas) covering each a specific main functionality. It can be hosted in an office on a desktop computer, on a laptop for autonomous field survey, as a server in a computing centre, or also on ruggedized lightweighed field server. So the TRS centralises the information and makes it available to all the tools whenever and wherever they need it.