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

Related Terms