What database management systems have you used in practice?

In practice with Node.js, I have used several SQL database management systems, including:

• PostgreSQL — a popular object-relational database with rich features and extension support.
• MySQL — a widely used relational database, often employed in web applications.
• SQLite — a lightweight embedded database, suitable for small projects and testing.

To work with these databases in Node.js, I used libraries like pg for PostgreSQL, mysql2 for MySQL, as well as ORM tools like Sequelize, which supports multiple DBMSs and simplifies interaction with them.