| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system for performing refund to a purchaser according to a purchase history in online shopping by lot. <P>SOLUTION: This refund system has: a means acquiring a lot target period from a lot condition master, extracting a matter corresponding to the lot target period with respect to each matter of the online shopping performed by a member, and recording purchase history information allowing specification of at least member identification information, a purchase day, and a purchase money amount into a purchase history data table for the lot; a means acquiring winning probability, executing the lot to a plurality of pieces of the purchase history information recorded in the purchase history data table for the lot based on the winning probability, and determining the winning purchase history information; and a means acquiring a refund amount determination condition, and applying the refund amount determination condition to each of the purchase history information determined as the winning to calculate a refund amount. <P>COPYRIGHT: (C)2008,JPO&INPIT |
