To provide a document control apparatus, a document control system, a document control method and a storage medium that are capable of providing more certain access control by the unit of document and a system (service) for allowing access in the form of charging additional charge with a fixed grace period, and are capable of supporting more flexible and certain storing service. The document control system includes a Web server, a session control part for controlling access, a job control part for controlling job execution, a document registration processing part for registering, updating and deleting a document, a document search processing part for searching an accumulated and controlled document, a document transfer processing part for transmitting and receiving document data, a user control part for controlling user information, a database control part for controlling document data, registration user, charge information and document access histories, and databases.

 
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< System and method for communications in a distributed computing environment

< Data backup and restoration using dynamic virtual storage

> Imaging system providing dynamic viewport layering

> Graphical user interface utilizing three-dimensional scatter plots for visual navigation of pictures in a picture database

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