A document management apparatus is configured to designate a desired document in a series of documents managed under a DMA document object model and to make a connection to a desired node in a hierarchical tree-structure of the desired document is provided. The document management apparatus includes an apparatus configured to accept a document call request for the desired document, that is made by a requesting device by presenting a document ID designating the desired document and specifying the desired node and to make connections to the specified nodes. The document ID includes a character string indicating a location of the desired document and character strings designating respective nodes in the hierarchical tree-structure of the desired document.