2. A Short History of PostgreSQL
The object-relational database management system now known as PostgreSQL (and briefly called Post-
gres95) is derived from the POSTGRES package written at the University of California at Berkeley. With
over a decade of development behind it, PostgreSQL is the most advanced open-source database available
anywhere, offering multiversion concurrency control, supporting almost all SQL constructs (including
subselects, transactions, and user-defined types and functions), and having a wide range of language bind-
ings available (including C, C++, Java, Perl, Tcl, and Python).
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