PostgreSQL

n keys, stored procedures, triggers, etc. It includes the majority of data types specified in standard SQL92 and SQL99, like INTEGER, NUMERIC, BOOLEAN, CHAR, VARCHAR, DATE, INTERVAL, and TIMESTAMP. Other interesting features included in PostgreSQL include: -High concurrency, which avoids having to block a table when you're working in it -Online/hot backups -Asynchronous replication -Nested transac...