| 摘要 |
PROBLEM TO BE SOLVED: To provide a continuous sale system which urges a purchaser to purchase an article by notifying the purchaser of coming of user expiration and the purchase period of the article. SOLUTION: This continuous sale system, which continuously sells the article by notifying the purchaser of coming of use expiration and the purchase period of the article through a network, computes the article purchase period of the purchaser from the article purchase history of the purchaser when the purchaser purchases the same article at least twice or more, computes the next-time purchase day of the article, and informs the purchaser of it. |
