Overview
ELT (Extract, Load, Transform) is an alternative to ETL. In ELT, data is extracted from source systems and loaded into a target system (like a cloud data warehouse) in its raw form. The transformation then happens using the processing power of the target system.
Advantages
- Speed: Faster loading of raw data.
- Scalability: Leverages the power of modern cloud warehouses.
- Flexibility: Raw data is available for different types of transformations later.
Popular Tools
- dbt (data build tool)
- Snowflake
- BigQuery