| 摘要 |
PROBLEM TO BE SOLVED: To synthetically analyze sales history data at various kinds of retailer shops unrelated to each other. SOLUTION: Customer identification data of a general customer purchasing a sales commodity are transmitted with sales history data from a shop terminal device 12 to a data processing device 11 to be managed, and data of a correlation pattern between a plurality of sales history data common between a plurality of customer identification data are detected in the data processing device 11. Consequently, it is detected that the general customer buying a sales commodity A has a great potential for becoming a purchaser of a sales commodity B. Because the customer identification data can issue without any relation to personal data allowing personal identification of the general customer, leakage of the personal data can be surely prevented, and the customer identification data can be actively made available for the general customer. |
