| http://www.w3.org/ns/prov#value | - As shown in FIG. 4, the database 1 comprises a processor unit 14 which performs processing of, for example, data and files, and it comprises a memory device unit 13 which stores various files and data, in particular the group data of the present invention, described hereinafter, and an access control potion 15 which performs read and write processes on the above-mentioned data and files.
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