Execution of Data Mappers

@inproceedings{Carreira2004ExecutionOD,
  title={Execution of Data Mappers},
  author={Paulo Carreira and Helena Galhardas},
  booktitle={IQIS},
  year={2004}
}
Data mappers are essential operators for implementing data transformations supporting schema mapping and integration scenarios such as legacy data migration, ETL processes for data warehousing, data cleaning activities, and business integration initiatives. Despite their widespread use, no formalization of this important operation has been proposed so far. In this paper we propose the data mapper operator as an extension to the relational algebra. We supply a set of algebraic rewriting rules… CONTINUE READING
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