How does ETL process work?

The Extract, Transform, Load (ETL) process is a crucial element of data integration and data warehousing. It involves extracting data from various sources, transforming it to fit the target system, and loading it into a data warehouse or database for analysis and reporting purposes. The process begins with data extraction, where data is retrieved from different sources such as databases, files, or web services. Then, the extracted data is transformed through various operations like cleaning, filtering, and aggregating to ensure consistency and quality. Finally, the transformed data is loaded into the target system for efficient storage and easy access. ETL process enables organizations to consolidate and integrate data from different sources, ensuring the availability of accurate, consistent, and relevant information for decision-making.
This mind map was published on 17 November 2023 and has been viewed 29 times.

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