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Home / Computers / Software / Databases / Relational / Implementations
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Web Sites
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- Business System 12 - A RDBMS designed to be strictly relational, unlike SQL. An important example of the model independence of a particular implementation such as SQL.
www.mcjones.org/System_R/bs12.html
- Database Research at Berkeley - The original Ingres and Postgres systems, which implemented QUEL, which was relational.
ftp://s2k-ftp.cs.berkeley.edu/pub/postgres/source.html#completed
- Multics Relational Data Store - RDBMS running under Unix's parent, Multics. Released June 1976, believed to be the first relational DBMS offered by a major vendor: Honeywell.
www.mcjones.org/System_R/mrds.html
- rdb - Makers of a very simple quasi-relational database based on Unix shell commands.
www.rdb.com
- System R - The first serious implementation of relational idea, was a basis for SQL and DB2. A site preserving early history of an idea that become a technology that became a critical business tool in an amazingly short time.
www.mcjones.org/System_R
- University Ingres - Implemented the QUEL language, based on relational calculus and more elegant and powerful than SQL. [Free software]
ftp://s2k-ftp.CS.Berkeley.EDU/pub/ingres
- Alphora Dataphor - An implementation of Hugh Darwen's and Chris Date's Tutorial D in The Third Manifesto. C# and MS .NET-based.
www.alphora.com/tiern.asp?ID=DATAPHOR
- LEAP - A non-SQL relational database using algebra. [Free software, GNU GPL]
leap.sourceforge.net
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