The PostgreSQL Global Development
Group is a community of companies and people co-operating
to drive the development of PostgreSQL, the worlds most advanced
Open Source database software.
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.
It is fully ACID compliant, has full support for foreign keys,
joins, views, triggers, and stored procedures (in multiple
languages). It includes most SQL:2008 data types, including
INTEGER, NUMERIC, BOOLEAN, CHAR, VARCHAR, DATE, INTERVAL,
and TIMESTAMP. It also supports storage of binary large objects,
including pictures, sounds, or video. It has native programming
interfaces for C/C++, Java, .Net, Perl, Python, Ruby, Tcl,
ODBC, among others, and exceptional documentation.
An enterprise class database, PostgreSQL boasts sophisticated
features such as Multi-Version Concurrency Control (MVCC),
point in time recovery, tablespaces, asynchronous replication,
nested transactions (savepoints), online/hot backups, a
sophisticated query planner/optimizer, and write ahead logging
for fault tolerance. It supports international character
sets, multibyte character encodings, Unicode, and it is
locale-aware for sorting, case-sensitivity, and formatting.
It is highly scalable both in the sheer quantity of data
it can manage and in the number of concurrent users it can
accommodate. There are active PostgreSQL systems in production
environments that manage in excess of 4 terabytes of data.
Some general PostgreSQL limits are included in the table
below.
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