Apache Airflow Documentation, The Apache Software Foundation, 2024 - Official documentation for Apache Airflow, a widely used platform for programmatically authoring, scheduling, and monitoring data workflows and pipelines.
Learning SQL: Master the Fundamentals of Standard SQL, Alan Beaulieu, 2020 (O'Reilly Media) - A practical guide to SQL, covering syntax, querying, data manipulation, and database concepts, valuable for any data professional.