Database search device, database search system, database search method, program and storage medium

摘要

A method is provided for allowing a database search that prevents an owner of the database or someone intercepting the database search in the network from knowing the contents of the query, without requiring any particular processing on the part of the database. Client 20 accesses database server 10 which stores sequence patterns and inquires whether the sequence patterns stored in the database server 10 exist in a predetermined sequence. Client 20 comprises sequence processing section 21 for dividing a search sequence subjected to search to create multiple subsequences; and query issuing section 22 for issuing a query to database server 10 using the created multiple subsequences individually as a query sequence.