| 摘要 |
Referencing point management data (15), a server (5) extracts a point balance (111) and a point expiring date (113) corresponding to a card number (101) transmitted from a computer (7) and transmits them together with commodity data (25) to the computer (7). Referencing the commodity data (25), the server (5) extracts an exchange point corresponding to a commodity ID (163) transmitted from the computer (7) and calculates a point balance after commodity exchange ((point balance (111)) - (exchange point (161))). When the point balance after the commodity exchange is smaller than 0, a deficit point is indicated to the computer (7) so as to prompt point purchase. According to member data (13), point sales data (23), and the like, the server (5) sets a point sales unit price, creates a point sales price list, and transmits it to the computer (7). According to the number of purchase points transmitted from the computer (7), the server (5) updates point purchase data (19), point history data (17), and the point management data (15). |
