11. The system of claim 10 , further comprising: a search module communicatively coupled to the item database, the search module to: receive search criteria from a user, the search criteria including the attribute value; identify a plurality of item records satisfying search criteria; present the plurality of item records to the user as specimens of the product record.
10. A system comprising: an item database; a hardware-implemented analysis module communicatively coupled to the item database, the analysis module being configured to: access a seller-generated item description received from a seller of an item, the item description being descriptive of the item; infer an attribute and an attribute value based on the item description; and include the attribute and the attribute value in an item record for the item, the item record being stored in an item database; and a hardware-implemented mapping module communicatively coupled to the item database, the mapping module being configured to: present a product record stored in a product database to the seller as a proposed record to be mapped to the item record; receive an acceptance of the proposed record from the seller; increment an acceptance count corresponding to the product record; and map the item record to the product record by including a reference to the product record in the item record based on the attribute and on the attribute value.