5. The update detecting apparatus according to claim 1 , wherein in the case where said determining unit determines that an update was performed in said target file, and an indication of the update is provided to an operator.
1. An update detecting system for detecting an update in a target file, the target file accessible by a server computer having a processing unit, and memory operatively coupled to the processing unit, comprising: a client computer having a central processing unit and memory operatively coupled to the central processing unit, the client computer and the server computer configured to communication over a communications network; the server computer configured to access the target file and transmit the target file to the server computer upon request by the client computer; a difference extractor configured to extract differences between text data included in said target file and text data included in a copy file obtained by copying said target file; a morphological analyzing unit configured to divide said differences into words to generate a word group, and configured to determine if one or more words in the word group matches a predetermined specific key word or if a group of words in the word group matches a regular expression; and a determining unit configured to determine that an update was is performed in said target file based on whether the morphological analyzing unit determined a match.