Connecting Node.js to PostgreSQL provides robust relational database capabilities for applications requiring ACID compliance and complex queries. As the creator of CoreUI with extensive Node.js development experience since 2014, I’ve integrated PostgreSQL with Node.js in numerous enterprise applications for financial data and user management systems. The most reliable approach uses the pg library with connection pooling for optimal performance and connection management. This method ensures secure, efficient database access while handling connection failures and maintaining data consistency.