PROBLEM TO BE SOLVED: To extract, for example, a customer who has not performed a market-supporting project business for each request for a repair business, and to increase the execution rate of the market-supporting project business. A market response project management system is a system for sharing information with related parts regarding past market response projects. Specifically, a market response project management database 19DB is created, and the market response project management database 19DB and the customer-specific information database 18DB are linked to be the subject of the market response project at the time of normal business opportunity, and the response has been completed. The unpaid amount is displayed on the "presence / absence of R etc." column screen 32 of the "customer information" screen 30 to clarify it. When there is a normal business, by viewing the "Customer Information" screen 30 of the work on the day in advance, it is possible to confirm the existence of unfinished market-compatible projects, and adjust the execution schedule of the market-compatible project business. Etc. can be performed. [Selection diagram] Fig. 4
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