| 摘要 |
PROBLEM TO BE SOLVED: To provide a data communication system by which necessary type of piece of data in a database formed in a server can be easily accessed through a network line from a client device. SOLUTION: The server stores access right information which shows a data type capable of being accessed depending on each of plural client devices. When the server receives a data read request sent through the network line, the server identifies a client device 1 that has transmitted the reception data read request among the plural client devices, discriminates, depending on the access right information, whether or not the data corresponding to the reception data read request is the data of a type accessible from the client device 1, and if the discrimination result shows that the data are the data of the type accessible from the client device 1, permits the client device 1 to access the data that corresponds to the reception data read request in the database of a first memory device of the server. |
