The Data Warehouse
8. The Data Warehouse contains data with several levels of detail; current detail data, old detail data, lightly summarized, and highly summarized data.
9. The Data Warehouse environment is characterized by read-only transactions to very large data sets. The operational environment is characterized by numerous update transactions to a few data entities at the time.
10. The Data Warehouse environment has a system that traces data resources, transformation, and storage.
11. The Data Warehouse’s metadata are a critical component of this environment. The metadata identify and define all data elements. The metadata provide the source, transformation, integration, storage, usage, relationships, and history of each data element.
12. The Data Warehouse contains a charge-back mechanism for resource usage that enforces optimal use of the data by end users.