According to one embodiment of the invention, an architecture for a data processing system can be implemented that processes data for a service provider itself or a client of a service provider as in the case of a third party processor. The elements of the architecture can be managed separately. For example, the architecture can be organized around eight subject areas, such as account, party, communication point, presentation instrument, rules, balances, transactions, and product. Relationships between each of the subject areas as well as between sub-types of each subject area can be established to provide flexibility in the management of the data.