- The Art of PostgreSQL, 2nd Ed. - Dimitri Fontaine - 2020 - Advanced SQL and PostgreSQL features through real application examples.
- PostgreSQL: Up and Running, 3rd Ed. - Regina Obe & Leo Hsu - 2018 - A friendly, practical introduction to PostgreSQL for application developers.
- MongoDB: The Definitive Guide, 3rd Ed. - Shannon Bradshaw et al. - 2019 - Comprehensive coverage of MongoDB for developers and operations.
- Redis in Action - Josiah Carlson - 2013 - Data structures, patterns, and real use cases for Redis beyond simple caching.
- Learning SQL, 4th Ed. - Alan Beaulieu - 2023 - Window functions, materialized views, JSON; graded exercises for self-study.
- The Data Warehouse Toolkit, 3rd Ed. - Ralph Kimball & Margy Ross - 2013 - Foundational guide to dimensional modeling and analytical data design.