fundamental master data
It is strategic for a geographical information system to guarantee the quality of the data and the traceability of the source of information. This guarantee can only be achieved by structuring a method for managing geographical data strictly correlated with the maintenance process or the production of real physical elements. The continuous evolution of the territory in fact renders the data gathered in sporadic measurement campaigns obsolete in the space of a few months.
For this reason it is fundamental to identify a limited number of information levels (fundamental master data) that are coherent with the logic of the management process in the territory.
The basic elements for the classification of Venice which constitute the fundamental “units of measurement” correspond to 5 information levels: paving, bridges, embankments, segments of canals and buildings. These elements are called Smu elements. Each element has characteristics such as the typology, the state of conservation, the surface or the presence of particular superstructures. When managing these objects, a record is made, when required, of every single variation, so that the morphological variations or changes in the state of conservation may be retrieved at a later date.
The activities that take place on the territory, such as large-scale interventions or routine maintenance, are organized in a specific manner (job master data).
Last but no less important are the secondary elements.
This strategy for a solution to the system entails the use of database technology structured for a spatial approach.