Schema mapping discovery from data instances

@article{Gottlob2010SchemaMD,
  title={Schema mapping discovery from data instances},
  author={Georg Gottlob and Pierre Senellart},
  journal={J. ACM},
  year={2010},
  volume={57},
  pages={6:1-6:37}
}
We introduce a theoretical framework for discovering relationships between two database instances over distinct and unknown schemata. This framework is grounded in the context of data exchange. We formalize the problem of understanding the relationship between two instances as that of obtaining a schema mapping so that a minimum repair of this mapping provides a perfect description of the target instance given the source instance. We show that this definition yields “intuitive” results when… CONTINUE READING
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