Data exchange: semantics and query answering. Fagin, R., Kolaitis, P. G, Miller, R. J, & Popa, L. Theoretical Computer Science, 336(1):89–124, Elsevier, 2005.
bibtex   2 downloads  
@article{fagin2005data,
  title={Data exchange: semantics and query answering},
  author={Fagin, Ronald and Kolaitis, Phokion G and Miller, Ren{\'e}e J and Popa, Lucian},
  journal={Theoretical Computer Science},
  volume={336},
  number={1},
  pages={89--124},
  year={2005},
  publisher={Elsevier}
}

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