Foreign Superkeys and Constant References

A foreign superkey in relational database theory is a set of attributes referring to a superkey of some relation variable. In this paper, the notion of constant references is introduced: foreign superkeys with constant elements, which lead to simplified constraint formulation and integrity enforcement when implementing entity subclassing in relational databases.

• Type: Conference
• Year: 2007
• Where: IDEAS
• Authors: Jon Heggland
• Keywords: Database, Foreign Superkeys, IDEAS 2007, Relational Database Theory, Relational Databases