MySQL: The World's Most Popular Open-Source Database

MySQL is the world's most widely used open-source relational database management system. It powers millions of websites and applications, including WordPress, Facebook, Twitter, and YouTube. MySQL is known for its reliability, ease of use, and strong community support.

• Most Used RDBMS: Powers more applications than any other database
• Web Standard: Default database for PHP and many web frameworks
• Cloud Available: Managed services on all major clouds (RDS, Cloud SQL)
• Career Demand: MySQL skills required in most developer job listings

• Web Developers: Store and retrieve application data
• Database Administrators: Manage production MySQL instances
• Backend Developers: Build data-driven applications
• WordPress Developers: Optimize WordPress database performance

• SQL queries and data manipulation
• Database design and normalization
• Indexing and query optimization
• MySQL configuration and tuning
• Replication (master-slave, group)
• Backup and recovery
• User management and security
• InnoDB internals

1. SQL Basics: SELECT, INSERT, UPDATE, DELETE, JOINs
2. Design: Tables, relationships, normalization
3. Administration: Installation, configuration, users
4. Optimization: Indexing, EXPLAIN, query tuning
5. Advanced: Replication, backup, high availability

• MySQL DBA: €45,000 – €78,000/year
• Database Developer: €42,000 – €72,000/year
• Full-Stack Developer with MySQL: €45,000 – €82,000/year