ETL (Extract, Transform, Load)

A three-phase process for moving and transforming data: Extract from source, Transform to match target format, Load into destination.

Complete Definition

ETL stands for Extract, Transform, and Load - the three phases of data integration and migration. Extract involves retrieving data from the source system, Transform involves cleaning, reformatting, and applying business rules, and Load involves inserting the transformed data into the target system. ETL tools and processes are essential for complex data migrations.

Key Points

1Three phases: Extract, Transform, Load
2Can be done with specialized tools or custom scripts
3Transform phase includes data cleansing and validation
4Load phase may be incremental or full

Related Terms

Data Migration

The process of transferring data from one system to another, typically during a software upgrade or system replacement.

Middleware

Software that connects different applications and enables them to communicate and exchange data.

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