Abstract: The present invention provides techniques for answering a user's query to a database system. An embodiment provides a database querying method in which a first data item is obtained from a Data Base Management System (DBMS) database table in response to a query request. A second data item is obtained by referencing a DBMS updated log file, having log data associated with the first data item, for example a timestamp. The first and second data items are then integrated and returned as an integration result to the query request. In one embodiment the first and second data items are integrated in a virtual table in accordance with a predetermined business rule.

Abstract: An electronic account settlement system includes a preauthorization device provided at a vendor site and having a first receiver to receive first identification information of a user. The preauthorization device is configured to initiate a preauthorization request for a subsequent transaction of a product or service between the user and a vendor of the vendor site. An accounting system is provided at a remote location from the preauthorization device. The accounting system has a database including account information relating to a plurality of users and is configured to receive the preauthorization request and decide whether to grant or reject the preauthorization request using the account information.

Abstract: The present invention provides techniques for answering a user's query to a database system. An embodiment provides a database querying method in which a first data item is obtained from a Data Base Management System (DBMS) database table in response to a query request. A second data item is obtained by referencing a DBMS updated log file, having log data associated with the first data item, for example a timestamp. The first and second data items are then integrated and returned as an integration result to the query request. In one embodiment the first and second data items are integrated in a virtual table in accordance with a predetermined business rule.

Abstract: The present invention discloses a consultation system which stores the intention of a client, processing know-how of consultation and progress status of consultation in addition to an expertise of the field of consultation, the status of client and reply, and accomplishes the flow of consultation in accordance with the intention and reaction of the client. Thus, the client can ask advices or expert's opinion in accordance with his desire.