Meaning of Data Warehouse

Simple definition

A data warehouse is a centralized system designed to store and organize large volumes of structured data for querying, analysis, and reporting.

How to use Data Warehouse in a professional context

Businesses use data warehouses to consolidate information from multiple sources, enabling data analysts and business intelligence tools to generate insights for decision-making.

Concrete example of Data Warehouse

A retail company collects sales, inventory, and customer data from various stores. This data is processed and stored in a data warehouse, enabling managers to analyze performance trends across regions.

How is a data warehouse different from a database?

A database handles day-to-day operations, while a data warehouse is optimized for analytical queries and historical data storage.

What tools are used for data warehouses?

Popular tools include Snowflake, Amazon Redshift, and Google BigQuery.

What are ETL processes in a data warehouse?

ETL (Extract, Transform, Load) refers to the process of preparing and transferring data into the warehouse.
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