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The logical structure of the VIDEOFAR drug data base.

The quality of the analyses that can be carried out by a Drug Prescription Monitoring System depends on the completeness and accuracy of the information on drugs. Data quality depends also on the organization of the data base that must be designed to allow higher retrieval power with regard to the information level theoretically contained in stored data. Considering these requirements we developed inside the VIDEOFAR project, starting from the preceding experiences at the Istituto Superiore di Sanità, an activity of design and realization of a Drug Data Base whose structure, both logical and physical, is described.