An open source relational DBMS from Actian Corporation, Redwood City, California that runs on Windows, Linux and most Unix platforms. Ingres is an industrial-strength DBMS that is ODBC compliant and uses the OpenROAD application development environment. Ingres was formerly a Computer Associates (CA) product, but was spun off in 2005 as Ingres Corporation, replicating a name used in prior years. In 2011, the company was renamed Actian Corporation.
One of the First Heavyweights
Ingres was one of the first DBMSs noted for its advanced features such as triggers and stored procedures. Originally developed by Relational Technology, which was founded in 1980 to market "INteractive Graphics and REtrieval System," Ingres was developed at the University of California at Berkeley in the early 1970s. The company was renamed Ingres Corporation and later acquired by the Ask Group and subsequently Computer Associates. See
PostgreSQL.