Data warehousing system for national railway traffic

implementation is dealt with. In particular, we present the data warehouse system for the decisional process based on our national train trasportation data owned by Trenitalia, the Italian main train service company and customer of the project. We discuss the operational environments interfacing with the data warehouse for data acquisition and elaboration, and related problems. The systemic aspects we describe refer to both the feasibility requirements, functionality, and technical architecture of the system. Moreover, a number of analysis reports actually realized are illustrated as examples of the functionalities provided to the customer. With the cooperation of the IT solutions provider, the prototype system has been released following primarily the guidelines of software reuse. In this way, and in order to satisfy all the customer’s requests, the entire warehouse’s data marts concerning the project are now in the complete re-engineering phase.