Priority-Based Conflict Resolution in Inconsistent Relational Databases

Details Priority-Based Conflict Resolution in Inconsistent Relational Databases Priority-Based Conflict Resolution in Inconsistent Relational Databases

2005-06-14

arxiv.org/abs/cs/0506063v1

Computer Science

Databases

Scientific paper

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 set of postulates that an extended framework should satisfy and consider two instantiations of the framework: (locally preferred) l-repairs and (globally preferred) g-repairs. We study the relationships between them and the impact each notion of repair has on the computational complexity of repair checking and consistent query answers.

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