]> PostgreSQL Tutorial Covering v6.5 for general release The PostgreSQL Development Team Thomas Lockhart Caltech/JPL (last updated 1999-05-19) PostgreSQL is Copyright © 1996-9 by the Postgres Global Development Group. Summary Postgres, developed originally in the UC Berkeley Computer Science Department, pioneered many of the object-relational concepts now becoming available in some commercial databases. It provides SQL92/SQL3 language support, transaction integrity, and type extensibility. PostgreSQL is an open-source descendant of this original Berkeley code. &intro; &sql; &arch; &start; &query; &advanced; &biblio;