The present invention provides a method for converting a searchable electronic catalog of the type used in e-commerce and industrial materiel systems. Such catalogs are typically configured as databases but can be created from a variety of different source materials. The method includes identifying a set of items to be converted, identifying the characteristics for each item, accessing the characteristic values for each identified item, accessing mapping rules for each characteristic and each item, mapping the characteristic values for each item in the first catalog into the characteristic identified by the rule for the item in the second catalog, and compiling the mapped characteristic values for each item to form the second catalog.