The best DW/BI architects will design a mechanism to connect back to transactional level and operational level reports in an atomic DW.
Reference and Master data definition: Managing shared data to meet organizational goals, reduce risks associated with data redundancy, ensure higher quality, and reduce the costs of data integration.
Architecture is the fundamental organization of a system, embodied in its components, their relationships to each other and the environment and the principles governing its design and evolution.
SOA is an abbreviation for service orientated architecture.