Updating Derived Relations: Detecting Irrelevant and Autonomously Computable Updates

  title={Updating Derived Relations: Detecting Irrelevant and Autonomously Computable Updates},
  author={Jos{\'e} A. Blakeley and Neil Coburn and Per-{\AA}ke Larson},
  booktitle={ACM Trans. Database Syst.},
Consider a database containing not only base relations but also stored derived relations (also called materialized or concrete views). When a base relation is updated, it may also be necessary to update some of the derived relations. This paper gives sufficient and necessary conditions for detecting when an update of a base relation cannot affect a derived relation (an irrelevant update), and for detecting when a derived relation can be correctly updated using no data other than the derived… CONTINUE READING
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