Postgres Pro Enterprise is an object-relational database management system (ORDBMS), developed by Postgres Professional in the Postgres Pro fork of PostgreSQL, which is in turn based on POSTGRES, Version 4.2, developed at the University of California at Berkeley Computer Science Department. POSTGRES pioneered many concepts that only became available in some commercial database systems much later.

Postgres Pro Enterprise runs on all major Linux and Windows operating systems. Like PostgreSQL, Postgres Pro Enterprise is ACID-compliant.

Both PostgreSQL and Postgres Pro Enterprise support a large part of the SQL standard and offer many modern features:

Besides, PostgreSQL and Postgres Pro can be extended by the user in many ways, for example by adding new