Data Pipelines: ETL, ELT, and DAGs
Data Pipelines: ETL, ELT, and DAGs Data pipelines move data from source to destination, turning raw facts into actionable insights. ETL and ELT describe where data is transformed. DAGs, or directed acyclic graphs, organize the steps that move data across systems. Understanding these ideas helps you pick the right pattern for your team and your data. What ETL means ETL stands for extract, transform, load. In this pattern, you clean and shape data before it enters the target warehouse or data lake. This upfront work helps quality, but it can slow loading and requires compute before load. ETL works well when data sources are messy or when the destination needs strict governance. ...