| 摘要 |
<p>A computer according to the present invention is provided with a control unit, including a processor, and a storage unit for storing pieces of data that were used by a plurality of businesses, and calculates the association between the plurality of businesses, wherein: the storage unit retains data identification information identifying the pieces of data that were used by the plurality of businesses, business identification information identifying each of the plurality of businesses, and association information identifying the association between the business identification information and the data identification information about the pieces of data used by the plurality of businesses; and the control unit checks the association information and outputs, as a combination of associated sets of business identification information, different sets of business identification information which are associated with at least one same piece of data among the pieces of data used by the plurality of businesses and identified by the data identification information.</p> |
