PostgreSQL

PostgreSQL is an extensible open-source relational database system used across analytics and application backends.

It is often preferred when standards-compliant SQL, strong transactional guarantees, and advanced features (such as JSON support and custom extensions) are required in one platform.

In research software contexts, PostgreSQL can support both operational APIs and analytical workloads when schema evolution is managed carefully.

See also: ORM, Schemas, Models, MySQL, SQLite