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Data & Analytics · Intermediate

Directed Acyclic Graph (DAG)

A graph of tasks with directed dependencies and no cycles, used to define pipeline workflows and execution plans.

Definition

Airflow defines workflows as DAGs of tasks. Spark builds a DAG of stages from transformations. dbt and Lakeflow Declarative Pipelines infer DAGs from model dependencies.

Exam tip

Airflow DAG = workflow definition; Spark DAG = execution plan of stages.

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