Remote services and private databases

This paper proposes a framework for receiving the services on the Internet with keeping the information private. This paper treats the services handling the aggregate information rather than the information itself. In this type of service, three-layer information structure is commonly observed. This structure consists of whole, unit, and target layers. Client computers send the information corresponding to these layers and their meta-data if required. In this paper, the interface between client and server computers is described in the form of XML. The functions that should be provided by the client and the server are also clarified.