| 摘要 |
<P>PROBLEM TO BE SOLVED: To enable interconversion of identifiers that can obtain a different value due to date and time, and a domain even though associated with the same management object and to enable scale-out after suppressing a data amount to be managed. <P>SOLUTION: A data management device 3 of a distribution ID management system manages data including an identifier, a domain and date and time by using two types of keys: an index key (combination of identifier and domain) and a sub route key (combination of route key and domain). When receiving an ID conversion request from a client device 1, a gateway device 2 determines a data management device 3(3A) for retrieving a route key by using an index key. Then, the data management device 3(3A) determines a data management device 3(3D) for retrieving an identifier of a conversion destination by using a sub route key, acquires the identifier of the conversion destination from the data management device 3(3D), and returns the identifier to the client device 1. <P>COPYRIGHT: (C)2013,JPO&INPIT |
