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'''Micro''' was one of the earliest relational [[database management system]]s. It was originally implemented in 1968 at the <ref>[[University of Michigan]]http://doi.acm.org/10.1145/1095495.1095500 It"A becameset thetheoretic firstdata largestructure scaleand relationalretrieval databaselanguage"], managementWilliam systemR. toHershey beand usedCarol in productionH. OrganizationsEasthope, suchPapers asfrom the USSession Departmenton ofData LaborStructures, theSpring EnvironmentalJoint ProtectionComputer AgencyConference, andMay researchers1972 fromin University''ACM ofSIGIR AlbertaForum'', theVolume University7, of MichiganIssue and4 Wayne(December State1972), Universitypp. used45-55, itDOI=10.1145/1095495.1095500, toSpecial manageInterest veryGroup largeon scaleInformation databases.Retrieval, ItAssociation ranfor underComputing [[MichiganMachinery, TerminalNew System]].York, NY, USA</ref> It combined the [[Relational database|relational model]] later made famous by [[Edgar F. Codd]] and [[Michael Stonebraker]] of the [[University of Michigan|University of Michigan's]] Database Research Group<ref>[http://dx.doi.org/10.1145/362384.362685 "A Relational Model of Data for Large Shared Data Banks"], E.F. Codd, Communications of the ACM, volume 13, issue 6 (June 1970), pp.77–387, doi= 10.1145/362384.362685</ref> with a natural language interface which allowed non-programmers to use the system.
Micro was originally implemented in 1968 at the University of Michigan and ran under the [[Michigan Terminal System]], the time-sharing system developed at U-M. It became the first large scale relational database management system to be used in production. Organizations such as the [[United States Department of Labor|US Department of Labor]], the [[United States Environmental Protection Agency|US Environmental Protection Agency]] and researchers from [[University of Alberta]], the [[University of Michigan]], and [[Wayne State University]] used it to manage very large scale databases. Micro continued to run in production until 1998.
Micro continued to run in production until 1998.
== External referencesReferences ==
{{Reflist}}
* [http://doi.acm.org/10.1145/1095495.1095500 "A set theoretic data structure and retrieval language"], William R. Hershey and Carol H. Easthope, Papers from the Session on Data Structures, Spring Joint Computer Conference, May 1972 in ''ACM SIGIR Forum'', Volume 7, Issue 4 (December 1972), pp. 45-55, DOI=10.1145/1095495.1095500, Special Interest Group on Information Retrieval, Association for Computing Machinery, New York, NY, USA
== External links ==
[http://www.eecs.umich.edu/db/ University of Michigan DatabseDatabase Research Group]
[[Category:Proprietary database management systems]]
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