1. Data Warehouse and operational environments are separated
2. data are integrated
3. contains historical data over a long time horizon
4. snapshot data captured at a given point in time
5. subject-oriented
6. mainly read-only
7. development is data driven; the classical approach is process driven
8. contains data with several levels of detail
9. characterized by read-only transactions to very large data sets
10. traces data resources, transformation, and storage
11. metadata are a critical component of this environment
12. contains a charge-back mechanism for resource usage
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