Experiences in using parallel systems for land information management

In this paper we report about our experiences in research projects dealing with the use of parallel system technology for the management of land information. From these experiences we have derived a characterization in terms of user requirements, system requirements and system architecture. The basic feature of a system dealing with planning and decision making problems in the context of land management is the possibility to support incremental constraint definition and modeling activities. In this way it is possible to decide which actions have to be done in an "on-line" way, i.e. interactively and on the basis of dynamically changing data. We point out which functionalities have be set at the system level, and which ones can be set at the application level. According to the present user profile, we also introduce a target architecture for an on-line decision support system that is based on the view building mechanism.<>