PostgreSQL

PostgreSQL 9.4.2

Free
PostgreSQL is a powerful, open source object-relational database system
3.8  (33 votes)
10.5 (See all)

PostgreSQL is a powerful, open source object-relational database system. It has full support for foreign keys, joins, views, triggers and stored procedures. PostgreSQL boasts sophisticated features such as Multi-Version Concurrency Control (MVCC), asynchronous replication, nested transactions (savepoints), online backups, a sophisticated query planner/optimizer and write ahead logging for fault tolerance, point in time recovery and tablespaces.

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