System and method for retrieval of data from related databases based upon database association model

摘要

A relevant-information retrieval system manages a model which describes a relevancy among a plurality of databases in accordance with associative values or a tree structure. Besides, when the retrieval system has received a search request for a certain database from a searcher, it specifies one of the databases administering information relevant to the certain database, in accordance with the model, and it presents information of the specified database to the searcher.