PostgreSQL is an open-source object-relational database system that focuses on flexibility and SQL compliance. Transactions with Atomicity, Consistency, Isolation, and Durability (ACID) qualities, automatically updatable views, materialized views, triggers, foreign keys, and stored procedures are all available in PostgreSQL. It can manage a wide range of workloads, from single computers to data warehouses or Web services with a large number of concurrent users. It's the default database for macOS Server, as well as Windows, Linux, FreeBSD, and OpenBSD.
