Title: A universal formalism to express decompositions, functional dependencies and other constraints in a relational database
Abstract: A general formalism, called the general dependencies, is presented. The multivalued, mutual, join and functional dependencies can be expressed in this formalism. Some properties of general dependencies are stated and their influence on the decompositionand the partial decomposition of a relation is studied. The class of general dependencies is compared with other classes of dependencies. It is proved that every set of functional dependencies can be expressed by a single general dependency. The same property holds for the multivalued dependencies. Finally the concept of functional dependency is generalized.
Publication Year: 1982
Publication Date: 1982-08-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 5
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot