IBM System R
IBM System R is a database system built as a research project at IBM San Jose Research (now IBM Almaden Research Center) in the 1970s. System R was a seminal project: it was a precursor of SQL, which has since become the standard relational data query language. It was also the first system to demonstrate that a relational database management system could provide good transaction processing performance. Design decisions in System R, as well as some fundamental algorithm choices (such as the dynamic programming algorithm used in query optimization[1]), influenced many later relational systems.
System R's first customer was Pratt & Whitney in 1977. [1]
See also
References
- ^ Selinger, P. G.; Astrahan, M. M.; Chamberlin, D. D.; Lorie, R. A.; Price, T. G. (1979), "Access Path Selection in a Relational Database Management System", Proceedings of the 1979 ACM SIGMOD International Conference on Management of Data, pp. 23–34, doi:10.1145/582095.582099
External links
- "A History and Evaluation of System R"
- System R website
- The 1995 SQL Reunion: People, Projects, and Politics
This article is based on material taken from the Free On-line Dictionary of Computing prior to 1 November 2008 and incorporated under the "relicensing" terms of the GFDL, version 1.3 or later.
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