The term entity in the most general sense refers to the objects of the information system that correspond to real-world objects that an organization must take into account: plots, municipalities, road sections … The transition from the world of objects to that of entities in a geographic database is not a simple operation. It requires the careful work of analysing information flows and conceptualization to obtain a result adapted to the needs of the information system. This requires the design of different data models. See also: Information system, Data Models