Exclusive Disjunctions in Indefinite and Maybe Information in Relational Databases
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.
Anahtar Kelimeler:
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.
Exclusive Disjunctions in Indefinite and Maybe Information in Relational Databases
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.,
- ISSN: 1300-0632
- Yayın Aralığı: Yılda 6 Sayı
- Yayıncı: TÜBİTAK
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