Why to Use Deductive Technology in SQL Databases?

The notion of a deductive database has emerged during the s in order to describe database systems capable of inferring new knowledge using rules Within this research area three kinds of rule based extensions for traditional databases have been intensively studied active deductive and normative rules Nowadays even SQL databases use these extensions in form of triggers views and integrity constraints although with quite restricted functionality A uniform approach making these concepts really orthogonal to each other is still missing In this paper we will show how new results in the eld of deductive databases may help to nd a more uniform extension of SQL