Integrated retrieval system, integrated retrieval method and media recorded with integrated retrieval program in distributed file system

摘要

An integrated retrieval system in a distributed file system (18a-18c), having a plurality of data management means (18) for distributively storing and managing data files and input/output means (10) for performing the input of retrieval instructions to said data management means (18) and the output of retrieval results from the data management means (18), comprises a cyclic control means (12,14) having retrieval completion judgment means for judging whether or not a retrieval has been completed based on said retrieval instruction and retrieval results, determination means for determining the next data management means to be retrieved when said retrieval completion judgment means has judged that the current retrieval has not been completed, and retrieval instruction transmission means for transmitting said retrieval instruction to the data management means determined by said determination means, a plurality of said cyclic control means (14a-14c) being provided in a one-to-one ratio with the data management means (18).