What is your level of knowledge in working with PostgreSQL and its features?

I am familiar with the basics of working with PostgreSQL: I can create databases, tables, and perform CRUD operations through SQL queries. I know how to use indexes to optimize queries, work with transactions, and understand the main data types.

I am also familiar with advanced features such as using functions and procedures in PL/pgSQL, setting up relationships between tables (FOREIGN KEY), creating views, and basic backup and recovery methods.

In the context of Node.js, I can connect to PostgreSQL using popular libraries such as pg, execute queries, and handle results asynchronously.