I cannot resist quoting Roman on this issue:
"Question: Data warehouse as a set of consolidated data marts or the “real deal” unified enterprise data model?
Answer: A person capable of devising a unified enterprise data model, which will explain all in the enterprise and be accepted by all in the enterprise, will also be capable of devising the “Grand Unified Theory”. Will that be God? Not sure. Will the person be treated as God? Yes".
How about calling it the Grand Overall Data (GOD) or Grand Overall Design?