PURPOSE:To attain access in a short period by processing plural search requests that a master processor by plural slave processors, supplying a command from a shared memory to a storage element access processor, and accessing respective storage elements of a data storage part. CONSTITUTION:The search requests which are received by the master processor 3 and inputted at the same time or with time are processed by the slave processors 411-4XY, which supply commands from the shared memory 2 to the storage element access processor 5 efficiently. The storage element access processor 5 accesses the respective storage elements 11-1n of the data storage part 1 and access data are processed in parallel so that they are passed to the search requesting origins. Consequently, the search requests are processed efficiently to attain access in a short period.
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