A data warehouse is a large, centralized repository of integrated data from multiple sources, designed to support business intelligence activities such as reporting, analysis, and data mining. It allows organizations to efficiently store, manage, and retrieve their data in a structured and organized way, providing a single source of truth for decision-making.

Using of a data warehouse comes with many benefits which includes:​

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• Improved data quality and consistency

• Enhanced data security and access controls

• Ability to handle large volumes of data

• Faster query and reporting performance

• Increased scalability and flexibility

• Improved decision-making through better data analysis

• Integration of data from multiple sources

• Centralized data management and organization

• Support for advanced analytics and data mining

• Better compliance with regulatory requirements.

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