Provided is an affiliation apportionment device that solves the problem that apportioning an affiliation among multiple people increases the load on an affiliate server. When a user purchases a product or is provided a service from an electronic commerce site, the provided affiliation apportionment device adds the full amount of compensation to either a submitter database or a referrer database on the basis of an apportionment ratio stored in an affiliate database. This reduces the load on the system by eliminating processing such as referring to the apportionment ratio and dividing the compensation amount, and cumulatively adding the divided compensation amount to each database, for every performance compensation.
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