Data search device, data search system, data search method and data search program

摘要

A range search of data is implemented, being a data search method to achieve a constant degree and a logarithmic hop count. A data search device that is located on a network and searches for data shared with another device, includes a dividing unit that divides a logical identifier range based on a logical identifier between own logical identifier and a logical identifier of a successor if a division condition of the logical identifier range requested to search for is met; and a search request transferring unit that transfers a search request including the logical identifier range acquired by the dividing means to a same or different device that meets a forwarding destination condition of the search request.