Software:IBM System R
IBM System R is a database system built as a research project at IBM's San Jose Research Laboratory beginning in 1974,[1] led by Edgar Codd, to implement his ideas on relational databases.[2] System R was a seminal project as the first implementation of SQL, which has since become the standard relational data query language. It was also the first system to demonstrate that a relational database 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[3]), influenced many later relational systems.
System R's first customer was Pratt & Whitney in 1977.[4] Not running on Unix hurt its popularity.[2]
See also
- IBM Db2
- IBM SQL/DS
- Ingres (database)
- SQL
- System/38
References
- ↑ "A History and Evaluation of System R". IBM. http://www.cs.berkeley.edu/~brewer/cs262/SystemR.pdf. ""Phase Zero" of the project, which occurred during 1974 and-most of 1975, involved the development of the SQL user interface"
- ↑ 2.0 2.1 "RDBMS Plenary 1: Early Years" (PDF) (Interview). Interviewed by Burton Grad. Computer History Museum. 2007-06-12. Retrieved 2025-05-30.
- ↑ "Access Path Selection in a Relational Database Management System", Proceedings of the 1979 ACM SIGMOD International Conference on Management of Data, 1979, pp. 23–34, doi:10.1145/582095.582099, ISBN 978-0897910019
- ↑ McJones, P (1995), "SQL reunion", System R, http://www.mcjones.org/System_R/SQL_Reunion_95/sqlr95-System.html.
External links
- Brewer, A History and Evaluation of System R, Berkeley: University of California, http://www.cs.berkeley.edu/~brewer/cs262/SystemR.pdf.
- McJones, P, System R, http://www.mcjones.org/System_R/.
- (PDF; technical report) The 1995 SQL Reunion: People, Projects, and Politics, Digital Equipment Corporation, https://bitsavers.org/pdf/dec/tech_reports/SRC-TN-1997-018.pdf.
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