Can you explain what is meant by the architecture of a data storage system (Data Warehouse)?

The architecture of a Data Warehouse system is the structure and organization of components that ensure the collection, storage, and analysis of large volumes of data from various sources.

Main components of Data Warehouse architecture:

• Data sources: operational databases, external systems.
• ETL processes (Extract, Transform, Load): extracting, transforming, and loading data into the warehouse.
• Data storage: a centralized place for storing integrated data.
• Multidimensional models (e.g., OLAP cubes) for analytics.
• Reporting and analysis tools.

The architecture can be single-layered, two-layered, or three-layered, where each layer is responsible for a specific function, such as the data layer, processing layer, and presentation layer.