Performance monitor for a relational information system
ACM '76 Proceedings of the 1976 annual conference
ACM SIGMOD Record
REGIS: a relational information system with graphics and statistics
AFIPS '76 Proceedings of the June 7-10, 1976, national computer conference and exposition
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A study of commands in a relational database system was undertaken to provide a basis for improving future implementations of relational techniques. The use of Regis (Relational General Information System), an interactive relational database system developed at General Motors Research Laboratories, was monitored to accumulate a large amount of data about distribution of command uses across a variety of applications developed by users with a diverse set of capabilities. Of the basic relational commands, it is important that searching, PROJECTION, and JOIN operations be efficient. However, optimizing INTERSECTION and "exclusive or" may not warrant the time and effort it would require. Although proportions of use varied, the rankings of use of relational operations were reasonably independent of applications and the programming expertise level of the users.