An information management system for detecting not only a set of management target data which has been changed but also another set of management target data which is affected by that change among a plurality of sets of management target data. The present system includes a dependency manager for managing the association of one set of management target data with another set of management target data which depends on the former set of management target data; and an inspector for detecting a set of management target data which is affected by a change in another set of management target data.