IBM System R is adatabase system built as a research project atIBM'sSan Jose Research Laboratory beginning in 1974.[1] System R was aseminal project: it was the first implementation ofSQL, which has since become the standardrelational dataquery language. It was also the first system to demonstrate that arelational database management system could provide goodtransaction processing performance. Design decisions in System R, as well as some fundamentalalgorithm choices (such as thedynamic programming algorithm used inquery optimization[2]), influenced many later relational systems.
System R's first customer wasPratt & Whitney in 1977.[3]
See also
editReferences
edit- ^"A History and Evaluation of System R"(PDF). IBM.
"Phase Zero" of the project, which occurred during 1974 and-most of 1975, involved the development of the SQL user interface
- ^Selinger, PG; Astrahan, MM;Chamberlin, Donald D; Lorie, RA; Price, TG (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,ISBN 978-0897910019,S2CID 8537523
- ^McJones, P (1995), "SQL reunion",System R.
External links
edit- Brewer,A History and Evaluation of System R(PDF), Berkeley: University of California.
- McJones, P,System R.
- The 1995 SQL Reunion: People, Projects, and Politics(PDF; technical report), HP.