ETL

Definition: ETL is a data processing procedure. It mainly involves extracting data from various data sources, transforming it to meet the requirements of the target data model, and then loading it into the target data storage, such as a data warehouse or a data lake.

It is a crucial part in data integration and data warehouse construction. ETL can integrate data from different systems and in different formats, providing a unified, clean, and accurate data foundation for data analysis, report generation, and other tasks.