| 摘要 |
The present invention relates a retrieving technology by using an index obtained at a specific time point and a rule obtained at a specific time point. The present invention provides a storage system includes: a first logical unit for storing an index; a second logical unit for storing a rule that defines how to output search results; a third logical unit for storing a snapshot of the index created based on a predetermined time; and a fourth logical unit for storing a snapshot of the rule created based on a predetermined time; a search engine server is configured to: search the index stored in the third logical unit with a keyword included in a search request for an index record; and output storage location information of a data object included in the extracted index record in an order according to the rule stored in the fourth logical unit. |
