Free online courseMySQL database for beginner

Course Description

Databases sit behind nearly every app, website, and business system, and MySQL remains one of the most widely used options in the world. This free online course is designed for beginners who want to understand how relational databases work and start writing practical SQL that produces accurate, useful results. You will go from the core idea of storing information in tables to confidently querying, sorting, filtering, and shaping data so it answers real questions.

You will learn how to create and structure databases and tables correctly, including the importance of primary keys and how they help keep records reliable. From there, you will practice retrieving information with SELECT in a way that feels intuitive, then refine results using DISTINCT, LIMIT, and ordering techniques. As you progress, you will develop stronger control over your searches with WHERE conditions, combined filters using AND and OR, and convenient matching patterns using IN, wildcards, and regular expressions.

Beyond finding data, you will build the skill of transforming it. The course guides you through creating custom outputs, using functions for common calculations and text handling, and summarizing information with grouping and conditional filters. You will also gain a solid introduction to working with multiple tables through joins, outer joins, and unions, as well as the logic behind subqueries that power more advanced analysis.

Finally, you will learn how to safely modify data and structures: inserting single or multiple rows, updating and deleting records, and managing schema changes through table creation and alteration actions such as renaming or removing elements. By the end, you will have a clear foundation for MySQL and SQL thinking—useful for entry-level data roles, backend development, reporting tasks, or any project that needs structured, trustworthy information.