Data warehouse is a repository of electronically stored information in an organization. Data warehouses are designed to facilitate reporting and analysis.
This definition of the data warehouse focuses on data storage. However, the means to retrieve and analyze data to extract, transform and load data and to manage the data dictionary are also considered essential components of a data storage system. Many references to data storage using this broader context. Therefore, a broader definition for data warehousing includes business intelligence tools, tools to extract, transform and load data into the repository, and tools to manage and retrieve metadata.
In contrast to the data stores are operational databases that support the processing of daily transactions.
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While the data {draw: framework} stores can be very beneficial for companies that use them, there are many challenges that a company faces in its application and use. Some experts have even said that data warehouses are one of the most overrated in the computer industry.
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