Abstract: Process information for indicating the content of a process in each system can be recorded in a storage medium that is shared by a plurality of systems in an electronic data interchange process in a format such that the process histories of the systems can be tracked. The process histories between the systems can be tracked by searching for the recorded information.

Abstract: A message relay program which increases the multiplicity of message-relay processing functions before the number of concurrently processed processing-request messages becomes too great. Message-relay processing units receive processing-request messages from clients, and transform each processing-request message so as to have a predetermined data structure, and transfer the transformed processing-request messages to processing execution units. In addition, when the message-relay processing units receive from the processing execution units processing-result messages corresponding to the processing-request messages, the processing-result messages are transferred to the clients. Further, when the number of processing-request messages which are concurrently being processed by the message-relay processing units exceeds a predetermined threshold value, a predetermined number of additional message-relay processing units are newly started.

Abstract: In view of providing a network system enabling communication having passed fire walls (repeaters) and assuring high security and operation flexibility through access control based on users and applications, a user-held table indicating correspondence between repeaters and passwords, a repeater-held table indicating correspondence between users and passwords and a table indicating access regions are defined respectively for users, departments of users and official positions of users and a route control information storing table indicating correspondence between networks and next transmitting destination is also provided to execute the access control for each user.

Abstract: Process information for indicating the content of a process in each system can be recorded in a storage medium that is shared by a plurality of systems in an electronic data interchange process in a format such that the process histories of the systems can be tracked. The process histories between the systems can be tracked by searching for the recorded information.

Abstract: A database managing module that is an order issuer server device or an order acceptor server device separately manages content data and management data of transaction slip data. Content data is a main text of a slip. Management data is extracted from the content data and used for searching the content data. Content data and management data are correlated with a document identifier uniquely assigned to the content data. When content data that is sent to a particular company is extracted from a large amount of content data, it is searched for management data with a key of the company name. Relevant content data is extracted corresponding to a document identifier of the extracted management data. The content data is transferred to the company.

Abstract: In view of providing a network system enabling communication having passed fire walls (repeaters) and assuring high security and operation flexibility through access control based on users and applications, a user-held table indicating correspondence between repeaters and passwords, a repeater-held table indicating correspondence between users and passwords and a table indicating access regions are defined respectively for users, departments of users and official positions of users and a route control information storing table indicating correspondence between networks and next transmitting destination is also provided to execute the access control for each user.