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» Simplification of Integrity Constraints for Data Integration
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PVLDB
2010
128views more  PVLDB 2010»
15 years 2 months ago
Update Rewriting and Integrity Constraint Maintenance in a Schema Evolution Support System: PRISM++
Supporting legacy applications when the database schema evolves represents a long-standing challenge of practical and theoretical importance. Recent work has produced algorithms a...
Carlo Curino, Hyun Jin Moon, Alin Deutsch, Carlo Z...
DAWAK
2009
Springer
15 years 8 months ago
Mining Violations to Relax Relational Database Constraints
Frequent constraint violations on the data stored in a database may suggest that the semantics of the represented reality is changing. In this work we propose a methodology and a t...
Mirjana Mazuran, Elisa Quintarelli, Rosalba Rossat...
IJCAI
2003
15 years 5 months ago
Logic Programs for Consistently Querying Data Integration Systems
We solve the problem of obtaining answers to queries posed to a mediated integration system un­ der the local-as-view paradigm that are consistent wrt to certain global integrity...
Loreto Bravo, Leopoldo E. Bertossi
CADE
2004
Springer
16 years 4 months ago
Decision Procedures for Recursive Data Structures with Integer Constraints
This paper is concerned with the integration of recursive data structures with Presburger arithmetic. The integrated theory includes a length function on data structures, thus prov...
Ting Zhang, Henny B. Sipma, Zohar Manna
AGENTS
1997
Springer
15 years 8 months ago
Integrating Range and Object Data for Robot Navigation
Most sensors used for robot navigation fall into one of two broad categories: range sensors that give approximate distances to obstacles, and object-based sensors that detect and ...
David Franklin, R. James Firby