Article ID: | iaor1992656 |
Country: | Germany |
Volume: | 27 |
Start Page Number: | 217 |
End Page Number: | 225 |
Publication Date: | Jun 1991 |
Journal: | Elektronische Informationsverarbeitung und Kybernetik |
Authors: | Biskup J., Demetrovics J., Libkin L.O., Muchnik I.B. |
The relational database schemes having unique minimal key are completely characterized. The relationships between them and normal form relation schemes are studied. Particular attention is paid to lattice theoretic aspects.