What Does Data Warehouse (DW) Mean?
A data warehouse (DW) is a collection of corporate information and data derived from operational systems and external data sources. A data warehouse is designed to support business decisions by allowing data consolidation, analysis and reporting at different aggregate levels. Data is populated into the DW through the processes of extraction, transformation and loading.
Techopedia Explains Data Warehouse (DW)
The data warehouse architecture was born in the 1980s as an architectural model designed to support the flow of data from operational systems to decision support systems. These systems require analysis of large amounts of heterogeneous data accumulated by companies over time.
