Abstract: Using a server system in accordance with the invention, a user and his/her companions can share information on the World Wide Web (WWW). The server system allocates a memory space for storing information particular to the user. This user memory space is associated with the user's login identification (ID) provided to the server system during the user login. Web information obtained by the user from the server system, or a representation of such information, is stored in the user memory space. In sharing the web information, the user's companions need to log onto the server system separately using the user's login ID. The server system then provides the companions with the web information based on the information currently stored in the memory space associated with the user's login ID provided by the companions.

Abstract: A fault-tolerant management information system includes three or more data management systems (e.g. data base systems) that replicate data. Data access requests resulting from user requests to application systems are issued by user request processing entities and forwarded by interceptors to all the data management systems. Responses from the data management systems are obtained, and a maximum group of identical responses provides the correct response, even in the case of "soft" errors not flagged by error codes. Errors are reported to an administration system, and correction of the data base containing the errors is handled by a recovery server. Overall system performance is further enhanced by including data base query systems, which replicate the data. Data access requests resulting from data base query requests are issued by query systems to the data base query systems.