Affordable Access

Publisher Website

Human performance in relational algebra, tuple calculus, and domain calculus

Authors
Journal
International Journal of Man-Machine Studies
0020-7373
Publisher
Elsevier
Publication Date
Volume
29
Issue
5
Identifiers
DOI: 10.1016/s0020-7373(88)80009-9
Disciplines
  • Mathematics

Abstract

The results of two experiments are reviewed in which users' performance in developing query solutions using relational algebra, relational tuple calculus, and relational domain calculus was measured. Sample query solutions in domain and tuple calculus are analysed and compared for complexity. In terms of human factors, tuple calculus is apparently the weakest of the three languages, with domain calculus showing a decided improvement over tuple calculus. Query solution analysis indicates possible reasons for this result. Although users performed best in relational algebra, their performance in domain calculus was equal to that of relational algebra in three of four query classifications. Further investigation is needed to compare algebra and domain calculus in other query classifications, in order to more precisely determine their relative utility in solving complex queries.

There are no comments yet on this publication. Be the first to share your thoughts.