A well-implemented data warehouse typically adheres to four fundamental features:
: Includes business intelligence (BI) tools, dashboards, and reporting interfaces for end-user interaction. Design & Implementation Stages Data Warehouse Systems: Design and Implementation
: It consolidates heterogeneous data from various sources into a unified, consistent format, ensuring a "single source of truth". A well-implemented data warehouse typically adheres to four
: Data is organized around specific business themes (e.g., sales, customers, or marketing) rather than functional applications. Data Warehouse Systems: Design and Implementation
: It maintains a history of data changes over time, enabling long-term trend analysis and forecasting.
: Once data enters the warehouse, it is generally read-only and does not change, which preserves the integrity of historical records. Architectural Layers