1. A Data Warehouse is Subject-Oriented It is subject-oriented so it provides information on topic rather than current operations of organizations. Aids in creating emphasized models and analytical reports.
2. Data Warehouses Support Integration - It can combine data from different sources like mainframes, relational databases, etc. Data is stored and organized from transactional and analytical data sources of various types.
3. Data Warehouses are Non-Volatile -Data warehouses are non-volatile, which means they won't lose previous data upon adding new data. Historical, current, and predictive analyses can also be performed.
4. Data in Warehouses are Predictable with Time Intervals -A warehouse maintains data on an hourly, weekly, monthly, and annual basis, etc. Data in the warehouse is transformed frequently so it reflects current business transactions.