Describe your experience working with SQL database management systems and provide examples of tasks you have completed.

In my experience with SQL databases, I have performed the following tasks:

• Designing and optimizing database schema for performance.
• Writing complex SQL queries for data retrieval, aggregation, and filtering.
• Creating and tuning indexes to speed up read operations.
• Developing stored procedures and triggers to automate business logic at the database level.
• Setting up backup and recovery procedures to ensure data reliability.
• Monitoring and optimizing query performance using EXPLAIN and profiling tools.

For example, I created reports by joining multiple tables using JOINs, and implemented automatic cleanup of outdated data through scheduled tasks and stored procedures.

This experience allows me to effectively manage databases and ensure stable application operation.