PURPOSE:To facilitate the correction and expansion of an enterprise model and to improve the efficiency of model construction by separating the logical part and operation part of the enterprise model systematically and controlling them independently. CONSTITUTION:A command control part analyzes commands inputted from a terminal device 11 and sends a macroinstruction LINK to the operation part to request the execution of corresponding commands. Command groups 4a and 4b, etc., at the operation part 4 are composed of numbers of operation routines which do not depend upon the enterprise model and are united functionally. An enterprise model logical program 6a or 6b at the logical part 6, model data 9a and enterprise model control information in a main memory 8 are loaded from a model library 7 and a model file 10 in the start of processing by the enterprise model starting command 4a at the operation part respectively.
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