PostgreSQL
PostgreSQL is a powerful, open source object-relational database system. It has more than 15 years of active development and a proven architecture that has earned it a strong reputation for reliability, data integrity, and correctness. It runs on all major operating systems, including Linux, UNIX (AIX, BSD, HP-UX, SGI IRIX, Mac OS X, Solaris, Tru64), and Windows. (more at http://www.postgresql.org/about/)
database, dbms
And it's free! Free as in beer!
Added by leortnoc
How do you use PostgreSQL?
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