Definition
ETL (Extract, Transform, Load) is a process that extracts data from different sources, transforms them into the required form and loads them into a target storage environment.
Human Explanation
Data are first extracted, then cleaned and transformed, and only afterwards stored in the destination.
Why it Matters
ETL enables data from multiple systems to be integrated and prepared for analysis.
Conceptual Boundary
ETL describes the order of operations. It does not specify a particular tool or technology.
Practical Perspective
ETL is commonly used with traditional data warehouses and reporting environments.