- Turkish Journal of Electrical Engineering and Computer Science
- Vol: 7 Issue: 1-3
- Exclusive Disjunctions in Indefinite and Maybe Information in Relational Databases
Exclusive Disjunctions in Indefinite and Maybe Information in Relational Databases
Authors : Taflan I. Gündem
Pages : 29-38
View : 5 | Download : 2
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :Incorporating indefinite information into databases has been studied extensively. In this paper, we propose a structure called an E-table to represent maybe information and inclusive and exclusive disjunctions. We define the type of redundancies in E-tables and show how to eliminate them. Also we present an extended relational algebra to operate on E-tables. In this paper we expand the concepts and operations defined by Lin and Sunderraman [1] in order to accommodate exclusive disjunctions in relational databases.Keywords : Turk. J. Elec. Eng. & Comp. Sci., 7, (1999), 29-38. Full text: pdf Other articles published in the same issue: Turk. J. Elec. Eng. & Comp. Sci., vol.7, iss.1-3.