| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a content management server for managing update histories while suppressing the load applied to the system or the like, in a digital content management system. <P>SOLUTION: Information related to attributes of a content that is an update object is managed as attribute-based attribute data, and when a content is updated, only attribute data of the update object is updated, thereby data stored for managing update histories is reduced, compared with a case using a relational database. A sub-ID related to a content ID is assigned to the updated attribute data, so that output data of the update histories can be generated using the content ID and the sub-ID as keys. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
