research
∙
02/22/2022
Relational Algebra and Calculus with SQL Null Values
The logic of nulls in databases has been subject of investigation since ...
research
∙
07/25/2017
A Decidable Very Expressive Description Logic for Databases (Extended Version)
We introduce DLR^+, an extension of the n-ary propositionally closed des...
research
∙
04/04/2016