Bill Inmon, known as the "Father
of Data Warehousing", defines a
data warehouse (DW) as a collection
of data that is:
| Data Warehouse feature | Description |
|---|---|
| 1. Subject-oriented: | Focuses on a specific area, such as sales, marketing, or distribution |
| 2. Integrated: | Combines different data types from various sources |
| 3. Non-volatile: | Stable and doesn't change once entered into the DW |
| 4. Time-variant: | Analyzes changes over time, and typically contains multiple years of data |
