A system is disclosed for centrally managing core enterprise reference data associated with an enterprise. A centralized master repository includes the core enterprise reference data. An internal services framework coupled with the centralized master repository provides a business process toolkit for managing models. The business process toolkit includes a model library comprising data models and one or more modeling services for modeling the system. The internal services framework also provides internal services for managing the core enterprise reference data, one or more of the internal services having direct access to the core enterprise reference data for management purposes. An infrastructure services layer coupled with the centralized master repository provides bulk data transfers of core enterprise reference data according to one or more enterprise-level business workflows, the external operational systems permitted indirect access to the core enterprise reference data for operational purposes.