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Query optimization

  • What is the best order for query processing?

  • Consider a query that is an AND of n terms.

  • For each of the n terms, get its postings, then AND them together.


Brutus248163264 128 
Caesar 123 5 816 2134
Calpurnia 1316  

 


                           Query: Brutus AND Calpurnia AND Caesar

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