| 摘要 |
PROBLEM TO BE SOLVED: To easily cope with fare revisions by extracting an issuing date of a train ticket, selecting an old fare table when it is before a fare revision date and selecting a new fare table when it is after the fare revision date. SOLUTION: A fare table is provided with a fare table 1 where new fare data of each company are recorded and a fare table 2 where old fare data are recorded. For instance, a train ticket A is subjected to adjustment processing by using the table 1 of new fares for adjustment fare of an O company line, the table 1 of new fares in a P company line, the table 2 of old fares in a Q company line, the table 2 of old fares in an R company line and the table 2 of old fares in an S company line. That is, the adjustment processing selects the new or old fare table 1 or 2 according to whether the issuing date of the ticket A is before a fare revision date or after the fare revision date. In the same manner, train tickets B to D are subjected to selection between the old and new fare tables 1 and 2 based on the issuing date of each ticket. |
