9 citations · 20 across the 5 of their papers we have counts for
6 papers
Priority-Based Conflict Resolution in Inconsistent Relational Databases
Slawomir Staworko, Jan Chomicki
We study here the impact of priorities on conflict resolution in inconsistent relational databases. We extend the framework of repairs and consistent query answers. We propose a se…
Monotonic and Nonmonotonic Preference Revision
Jan Chomicki, Joyce Song
We study here preference revision, considering both the monotonic case where the original preferences are preserved and the nonmonotonic case where the new preferences may override…
Classes of Spatiotemporal Objects and Their Closure Properties
Jan Chomicki, Sofie Haesevoets, Bart Kuijpers +1
We present a data model for spatio-temporal databases. In this model spatio-temporal data is represented as a finite union of objects described by means of a spatial reference obje…
Minimal-Change Integrity Maintenance Using Tuple Deletions
Jan Chomicki, Jerzy Marcinkowski
We address the problem of minimal-change integrity maintenance in the context of integrity constraints in relational databases. We assume that integrity-restoration actions are lim…
Preference Queries
Jan Chomicki
The handling of user preferences is becoming an increasingly important issue in present-day information systems. Among others, preferences are used for information filtering and ex…
On the Computational Complexity of Consistent Query Answers
Jan Chomicki, Jerzy Marcinkowski
We consider here the problem of obtaining reliable, consistent information from inconsistent databases -- databases that do not have to satisfy given integrity constraints. We use…