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Update Rewriting and Integrity Constraint Maintenance in a Schema Evolution Support System: PRISM++

Authors: 
Curino, Carlo; Moon, Hyun J.; Deutsch, Alin; Zaniolo, Carlo
Year: 
2011
Venue: 
PVLDB

Supporting legacy applications when the database schema evolves represents a long-standing challenge of practical and theoretical importance. Recent work has produced algorithms and systems that automate the process of data migration and query adaptation; how- ever, the problems of evolving integrity constraints and supporting legacy updates under schema and integrity constraints evolution are significantly more difficult and have thus far remained unsolved.

Accessing and Documenting Relational Databases through OWL ontologies

Authors: 
Curino, Carlo; Orsi, Giorgio; Panigati, Emanuele; Tanca, Letizia
Year: 
2009
Venue: 
FQAS

Relational databases have been designed to store high volumes of data and to provide an efficient query interface. Ontologies are geared towards capturing domain knowledge, annotations, and to offer high-level, machine-processable views of data and metadata. The complementary strengths and weaknesses of these data models motivate the research effort we present in this paper. The goal of this work is to bridge relational and ontological worlds, in order to leverage the efficiency and scalability of relational technologies to support an ontological, high level view of data and metadata.

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