| 摘要 |
<P>PROBLEM TO BE SOLVED: To control access right to data properly and efficiently in a data control device which determines whether access is possible to an object which is hierarchically stored based on the access right information for each of the stored objects. <P>SOLUTION: A data control device comprises: an access right information setting part 301 that sets access right information only for the object (cabinet) 310 stored in the highest layer of the stored objects 300; a reference part 302 that refers to the access right information set in the cabinet 301 when there is an access request to the objects (a folder 320, a document 330, a section 340) for which access right information is not set, other than the cabinet 310; and an access determination part 303 that determines whether access is to be permitted to the objects 320, 330 and 340 for which access right information is not set based on the access right information referred to. <P>COPYRIGHT: (C)2007,JPO&INPIT |
