PostgreSQL

Another system of relational databases and SQL dialect, next to MySQL and SQLite. In the making for 20 years, largely thanks to the wide community that contributed to its high level of accuracy and integrity. It supports advanced data types while maintaining high performance. PostgreSQL supports Amazon Web Services, which supports PostgreSQL through a fully managed Amazon Relational Database Service (RDS), which facilitates the configuration, maintenance and scaling of PostgreSQL deployments in the cloud. Amazon also offers its own AuroraDB engine, which is fully compatible with PostgreSQL-based applications. It is most popular among the Python web developer community.