SQL Articles

An honest guide to the best ways to practice SQL in 2026, from interactive platforms to real-database projects, plus where DataCamp courses and AI tutor fit in.

A structured learning path of the best free SQL resources, from beginner-friendly interactive lessons to interview-style practice sites.

An honest guide to the best SQL certifications in 2026, comparing credentials from DataCamp, Oracle, Microsoft, and Azure.

The best SQL courses for beginners, joins, data analysis, advanced queries, database design, Snowflake, data engineering and certification, ranked with verified ratings.

Learn what T-SQL is, how it extends SQL, and how to use it for querying, automation, and procedural logic in SQL Server with practical examples.

Master many-to-many relationship design using junction tables. Learn to maintain normalization, avoid data anomalies, and implement schemas in SQL and NoSQL.

Master database interview questions, from foundational SQL concepts to advanced system design scenarios. This in-depth guide covers everything you need to ace DBMS interviews and land your next role.

This SQL roadmap guides you step by step for 12 months, from basics to advanced SQL, with hands-on projects, tools, and career-focused learning.

Discover how Sharan Bhogal transformed her passion for business into a thriving data career using DataCamp’s hands-on learning platform.

A DBMS keeps data organized, secure, and easy to access. It helps businesses and applications store information without the mess so everything stays in the right place and is ready when you need it.

Ever wondered how databases keep your data safe and consistent? This guide breaks down ACID transactions with simple explanations, examples, and best practices.

Prepare for PL/SQL interviews with key topics like functions, triggers, dynamic SQL, error handling, best practices, and real-world scenario-based questions.