Patent ID: 7831618
Filing Date: 2010-11-09
Classification: G06F,Y10S

Abstract:
1. An information processing system comprising; a storage system which includes a plurality of storage areas, wherein at least one of the storage areas holds an access attribute information having tamper proof information regarding data included in other storage areas for protecting the data from being falsely or erroneously updated, the tamper proof information applies to all users of the data and is generated when the database is defined, the tamper proof information defines whether the storage area is associated with an insert-only attribute which indicates that the data can not be updated, deletion prohibiting period information which indicates a time period, beginning at the time the data was inserted in the storage area, during which data can not be deleted, and data insertion date and time holding information which indicates the date and time data is inserted into the storage area; and a host computer coupled to the storage system, wherein if a storage area is associated with said insert-only attribute, then data insertion and access to data in the storage area is authorized and update of the data in the storage area is not authorized, wherein if the storage area is associated with said insert-only attribute and said deletion prohibiting period information, then deletion of data of the storage area provided in the time period during which the data of the storage area can not be deleted has expired is authorized, wherein if the storage area is associated with said insert-only attribute and said data insertion date and time holding information, then date and time information indicating the date and time data is inserted into the storage area is stored, and change of said insert-only attribute after said insert-only attribute is specified is disabled, wherein said attribute cannot be changed after the database has been defined, wherein the host computer executes data insertion processing after date and time information to be stored has been created, wherein, if a deletion prohibition period, stored on the deleting prohibiting period information, during which data of the storage area cannot be deleted has passed since the time when said data to be deleted was registered, the deletion of said data to be deleted is authorized, and wherein if the deletion prohibition period during which data of the storage area cannot be deleted has not passed since the time when said data to be deleted was registered, then the deletion of said data to be deleted is prohibited.