View determinacy for preserving selected information in data transformations

@article{Fan2012ViewDF,
  title={View determinacy for preserving selected information in data transformations},
  author={Wenfei Fan and Floris Geerts and Lixiao Zheng},
  journal={Inf. Syst.},
  year={2012},
  volume={37},
  pages={1-12}
}
When transforming data one often wants certain information in the data source to be preserved, i.e., we identify parts of the source data and require these parts to be transformed without loss of information. We characterize the preservation of selected information in terms of the notions of invertibility and query preservation, in a setting when transformations are specified as a view V (a set of queries), and source information is selected by a query Q. We investigate the problem for… CONTINUE READING

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