Key features of PostgreSQL is ACID (properties (Atomicity, Consistency, Isolation, Durability) fully supports foreign keys, joins, by the views, stored procedures, and triggers (multi language) with the SQL92 and SQL99 data types in the INTEGER, NUMERIC, BOOLEAN, including CHAR, VARCHAR, DATE, INTERVAL, and TIMESTAMP.In addition to work in many of the PostgreSQL platform, including Linux, UNIX (AIX, BSD, IRIX, SGI, Mac HP-UX OS X, Solaris, Tru64), and Windows.Another important feature is the PostgreSQL license activation code software a BSD, which means the user can use for free. In addition, currently, PostgreSQL is not controlled by any particular organization, but has a joint developments from around the world make PostgreSQL is updated continuously.
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