Abstract: A method and system is provided for storing and manipulating customer purchase information received from a plurality of sources. A computer system may be used comprising a storage device for storing the customer purchase information and a processor for processing the customer purchase information. The method may include receiving the customer purchase information; organizing the customer purchase information within a predetermined organizational structure; creating a customer preference based at least in part on the customer purchase information; and aggregating customer purchases for merchant classes based on the customer purchase information so as to generate aggregated customer purchase information. The method may further include generating marketing information based on at least one of the customer preference and the aggregated customer purchase information.