SQL is a language used in popular database systems like MySQL, SQL Server, Oracle, SQLite, and PostgreSQL.
PostgreSQL is a trusted database system known for handling large data volumes, ensuring data integrity, and scaling effectively under heavy workloads.
While SQL provides a core language structure consistent across various systems, PostgreSQL is a database system that expands upon SQL with additional capabilities and optimizations.
Understanding the difference between SQL and PostgreSQL is essential for working with databases and developing applications with scalability and flexibility.