How many tier data warehouse architecture?

Question: How many tier data warehouse architecture?

There are three tiers in a data warehouse architecture:-

1.Bottom Tier - Data Storage: This is the lowest tier of a data warehousing architecture. It consists of data sources, such as databases and data warehouses, which store all of the raw data that is used in the data warehouse. This tier is responsible for the storage, versioning, and backup of all data.

2.Middle Tier - Data Access Layer: This tier is responsible for providing access to the data from the data warehouse. It includes data integration tools, extract, transform, and load (ETL) processes, and any data marts or cubes needed for analysis.

3.Top Tier - Analysis and Presentation: The top tier is where data is accessed, transformed, and analyzed. Data is visualized and presented to business users. This tier includes reporting and analytics tools such as business intelligence (BI) and data visualization software.

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