<p>A data searching apparatus is disclosed which comprises: a request receiving portion for receiving a searching request including searching data and a registering request; a record number providing portion responsive to the registering request for providing record number data to each record which is a unit of data to be registered; a relatively-numbering portion for grouping the record number data into groups and converting the record number data into group number data and relative record number data within each of the groups; an index file generation portion for generating an index file from the data and the relative record number data; an index file storing portion for storing the index file; an index file searching portion for searching one of records indicated by the searching data in accordance with the index file in the index file storing portion in response to the searching request from the request receiving portion; an absolutely-numbering portion for converting the relative number data and group number data of the searched one of record into the record number data; and a searching result outputting portion for outputting a searching result in accordance with the record number data from the absolutely-numbering portion. <IMAGE></p>
