Title

A Relational-Calculus Query Language For Historical Databases

Title - Alternative

Comput. Lang.

Keywords

HISTORICAL DATABASES; QUERY LANGUAGES; BOOLEAN OPERATORS; TEMPORAL; LOGIC; RELATIONAL-CALCULUS; RELATIONAL USER INTERFACES; TEMPORAL DATABASES; MODEL; Computer Science, Software Engineering

Abstract

In this paper, an approach to handle time in relational query languages is outlined. The approach is based on extending Boolean and comparison operators by allowing their operands to be sets of intervals. The proposed temporal logic is shown to satisfy the properties of the normal Boolean logic. A relational-calculus query language using the extended logic is developed. The extended logic presented in this paper provides a good degree of flexibility in expressing different temporal requirements and therefore promises to be a successful approach for designing powerful temporal query languages.

Publication Title

Computer Languages

Volume

17

Issue/Number

3

Publication Date

1-1-1992

Document Type

Article

Language

English

First Page

185

Last Page

197

WOS Identifier

WOS:A1992HG33100004

ISSN

0096-0551

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