Ingres is a commercially supported, open-source SQL relational database management system intended to support large commercial and government applications.
It is a database that combines the flexibility of open source with the business class availability and reliability of commercial DBMS platforms.
Originally funded by U.S. defense agency and the National Science Foundation, Ingres has been leading the industry with innovative technology for decades and helping manage the most demanding enterprise applications of Fortune 500 companies. Core Ingres technology forms the foundation, not only for Ingres Database, but numerous other industry-leading RDBMS systems as well.
Ingres reduces the complexity, time, database administrator (DBA) skills and cost associated with database management by helping to eliminate, simplify and automate many tasks traditionally associated with maintaining an enterprise-class database
via Ingres – Linux Links – The Linux Portal Site.