| 摘要 |
A database system includes a database device for managing a database including data records, each data record including identification information and an attribute value, index devices for managing an index database including index records, each index record including search information determined by the attribute value and the identification information, each index devices managing each of parts of the index database, and a management device executing a process including detecting an update frequency of the attribute value stored in the database, generating search information by combining the attribute values, each attribute values having the update frequency higher than a predetermined frequency, generating the index record including the generated search information and the identification information associated with the combined attribute values included in the generated search condition information, and determining one of the plurality of index devices for managing the generated index record.
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