Gourt > Computers > Software > Databases > Relational > Implementations > Ingres
- This article is about a relational database system. For the artist, see Jean Auguste Dominique Ingres.
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Ingres (pronounced "ingress") is a commercially supported, open-source relational database management system. Ingres was first created as a research project at the University of California, Berkeley starting in the early 1970s and ending in the early 1980s. The original code, like that from other projects at Berkeley, was available at minimal cost under a version of the BSD license. Since the mid-1980s, Ingres had spawned a number of commercial database applications, including Sybase, Microsoft SQL Server, NonStop SQL and a number of others. Postgres (Post Ingres), a project which started in the mid-1980s, later evolved into PostgreSQL. By any measure, Ingres is one of the most influential modern computer research projects.
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Database Research at Berkeley - The original Ingres and Postgres systems implementing QUEL, which was relational.
Ingres - The original RDBMS, but the current version of its QUEL language has been corrupted to acommodate SQL.
Meta Description: [ Open Source — The SQL ]
University Ingres - Implemented the QUEL language, based on relational calculus and more elegant and powerful than SQL. [Free software]
