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Modelling and simulation of information systems on computer: methodological advantages
Abstract:
Modelling and simulation of information systems by the means of miniatures on computer aim at two general objectives: (a) as an aid to design and realization of information systems; and (b) a tool to improve the dialogue between the designer and the users. An operational information system has two components bound by a dynamic relationship, an information system and a behavioural system. Thanks to the behaviour system, modelling and simulation allow the designer to integrate into the projects a large proportion of the system's implicit specification. The advantages of modelling to the information system relate to: (a) The conceptual phase: initial objectives are compared with the results of simulation and sometimes modified. (b) The external specifications: simulation is particularly useful for personalising man-machine relationships in each application. (c) The internal specifications: if the miniatures are built on the concept of process, the global design and the software are tested and also the simulation refines the configuration and directs the choice of hardware. (d) The implementation: stimulation reduces costs, time and allows testing. Progress in modelling techniques will undoubtedly lead to better information systems.
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