DOCUMENT MANAGEMENT DEVICE, INFORMATION PROCESSING METHOD, AND PROGRAM

PROBLEM TO BE SOLVED: To easily generate relationship information between documents.SOLUTION: A document management device comprises: operation information acquisition means that acquires operation information related to a document; state information acquisition means that acquires state information related to the document; determination means that determines relationship information indicating a document related to the document on the basis of the operation information acquired by the operation information acquisition means and the state information acquired by the state information acquisition means; and storage means that stores the relationship information determined by the determination means in a storage device in association with the document.