Accession Number : ADA188350

Title :   An Evaluation of Historical Algebras,

Corporate Author : NORTH CAROLINA UNIV AT CHAPEL HILL DEPT OF COMPUTER SCIENCE

Personal Author(s) : McKenzie, Edwin ; Snodgrass, Richard

PDF Url : ADA188350

Report Date : Oct 1987

Pagination or Media Count : 44

Abstract : This paper surveys historical algebras, extensions of the conventional relational algebra that support representation of the temporal dimension of real-world phenomena in databases. The authors identify twenty-one criteria for evaluating historical algebras. These criteria are well-defined, have an objective basis for being evaluated, and are arguably beneficial. Incompatibilities among the criteria are also identified. Nine historical algebras are evaluated against the criteria.

Descriptors :   *ALGEBRA, *SET THEORY, DATA BASES, TIME, SEMANTICS, VALIDATION

Subject Categories : Theoretical Mathematics

Distribution Statement : APPROVED FOR PUBLIC RELEASE