MODELLING LEVELS IN THE STATISTICAL INFORMATION SYSTEM OF THE BANK OF ITALY.
Vincenzo Vecchio · 2002
In the electronic and data processing (EDP) literature, the idea of a hierarchy of models emerged a certain time ago. The principle is that an information system can be described by different levels (layers) of modelling in a hierarchy in which the model of some level is described in terms of a model of the hierarchically upper level and it also describes one or more models in the hierarchically lower level, as displayed in Fig. 1.