To inexpensively provide a system which can always execute a processing within a prescribed time even if the request of the processing which is to preferentially be executed is generated in any situation.

A load detection part 27 detecting the load situation of a process execution part 25 executing a plurality of processings in parallel in accordance with a plurality of processes 23 and 24 generated by a process generation part 22, and a generation regulation part 28 suppressing the generation of the registration process 23 by considering the load situation detected by the load detection part 27 are provided. The execution of a data registration processing is suppressed in accordance with the load situation of a computer resource in a data registration processing and a data retrieval processing, which can be executed in parallel. Thus, the load of the data registration processing can always be suppressed to a prescribed value or less. Then, the retrieval processing can always be executed within prescribed time even if the request of the other data retrieval processing which is preferentially to be executed is generated at any timing.