Handling Summary Information in a Database: Derivability

  title={Handling Summary Information in a Database: Derivability},
  author={Hiroshi Sato},
  booktitle={SIGMOD Conference},
"Summary data" is a representation of "groups of facts." Statistics are a typical example of summary data, which is often a major component of databases that deal with huge domains, such as objects in a whole country or events that occurred over a long time range. Although any summary can be reproduced from the corresponding originals, these are often unavailable and the required data may or may not be derivable from the given summary data. A schema of summary data is defined as a relationship… CONTINUE READING
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