relational databases

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Learn SQL for Beginners: A Practical Introduction to Databases

June 17, 2025 by Sufiyan Momin

New to SQL? This beginner-friendly guide breaks down everything from what SQL is to how to write your first query with examples and real use cases.

SQL & Databases: Infographic chart contrasting SQL tables with document, key-value, column-family and graph databases.

PyUniverse » Blog » relational databases

SQL & Databases 101: Fundamentals of Relational and NoSQL Databases

June 9, 2025June 9, 2025 by Sufiyan Momin

Learn how to design, query, and optimize both relational and NoSQL databases in this comprehensive guide. Covering SQL basics, advanced techniques, schema design, transactions, and when to choose each database paradigm.

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