Meaning of Directed Acyclic Graph (DAG)

Simple definition

A directed acyclic graph (DAG) is a data structure consisting of nodes connected by directed edges, where the connections flow in one direction without forming cycles.

How to use Directed Acyclic Graph (DAG) in a professional context

DAGs are used in computing for scheduling tasks, version control, and blockchain systems. They help model dependencies and workflows efficiently.

Concrete example of Directed Acyclic Graph (DAG)

In a data pipeline, a DAG represents tasks such as data extraction, transformation, and loading, ensuring each step occurs in the correct order.

Why are cycles not allowed in DAGs?

Cycles would create infinite loops, making it impossible to determine the correct sequence of tasks.

What is a real-world application of a DAG?

Blockchain systems like Ethereum use DAGs to organize transactions.

What tools use DAGs in data workflows?

Tools like Apache Airflow and Prefect utilize DAGs to manage task dependencies.
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