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MLA
Lloyd, Scott J. and Geoffery Steinberg. "The Schema Mapper: An Expert System that Determines the Least Cost Physical File Structure in a Database Management System."
JDM
8.2 (1997): 16-22. Web. 30 Mar. 2020. doi:10.4018/jdm.1997040102
APA
Lloyd, S. J., & Steinberg, G. (1997). The Schema Mapper: An Expert System that Determines the Least Cost Physical File Structure in a Database Management System.
Journal of Database Management (JDM), 8
(2), 16-22. doi:10.4018/jdm.1997040102
Chicago
Lloyd, Scott J. and Geoffery Steinberg. "The Schema Mapper: An Expert System that Determines the Least Cost Physical File Structure in a Database Management System,"
Journal of Database Management (JDM)
8 (1997): 2, accessed (March 30, 2020), doi:10.4018/jdm.1997040102
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The Schema Mapper: An Expert System that Determines the Least Cost Physical File Structure in a Database Management System
Scott J. Lloyd (Eastern Illinois University, USA) and Geoffery Steinberg (Kent State University, USA)
Source Title:
Journal of Database Management (JDM)
8(2)
Copyright:
© 1997
|
Pages:
7
DOI:
10.4018/jdm.1997040102
OnDemand PDF Download:
$37.50
Abstract
This paper discusses the importance of matching the physical file structure of a database with the different types of user transaction requests that the database management software must process. Different physical file structures and user transaction types are explained and interaction between them is discussed and shown. The Schema Mapper, a model based expert system first assures stable transaction processes using Statistical Process Control methods. It then forecasts the frequency and response time of each type of database user transaction requests leading to the choice of file structure that should minimize total system response time. An experiment is presented which demonstrates The Schema Mapper’s performance during five days of simulated transactions. Experimental results are summarized and presented as evidence of the effectiveness of this expert system. Conclusions and extensions are then offered.
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