Information update system, information update method, and computer-readable medium

摘要

A system includes a first server apparatus storing information and a plurality of second server apparatuses being connected to the first server apparatus. Each of the plurality of second server apparatuses transmits an update request signal for request to update the information stored in the first server apparatus to the first server apparatus. The first server apparatus selects, when receiving the update request signal, an update scheme corresponding to the update request signal out of a plurality of update schemes. The first server apparatus updates information corresponding to the update request signal with the selected update scheme.