Information systems and data access method in the information system

摘要

PPROBLEM TO BE SOLVED: To provide a further efficient data access method in an information system comprising a plurality of data using systems connected to networks N1 and N2 and a plurality of data providing systems connected to the network N2. PSOLUTION: A data using system P1 transmits a use request for data of the data providing system D2 to the other data using system P2 via the network N1. The data using system P2 receiving the data using request transmits a processing executing request corresponding to the data using request to the data providing systems D2 via the network N2. The data providing system D2 receiving the executing request transmits required data to the data providing system D1 via the network N2 by executing processing corresponding to this executing request. The data providing system D1 receives the data, and stores the data. PCOPYRIGHT: (C)2004,JPO