A system for document management and information processing including a plurality of databases, a plurality of data processing parts, a user interface part, and connecting parts. The connecting parts include respective interfaces corresponding to respective ones of the plurality of databases and common interfaces corresponding to the user interface part, even when the respective interfaces are different from each other. The system also includes a display part for displaying data concerning the plurality of databases, and an instructing part for the user to give instructions for processing data of the plurality of databases.