Maurice Tutor

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Teaching Since: May 2017
Last Sign in: 399 Weeks Ago
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  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Computer Science Posted 21 Jul 2017 My Price 3.00

aggregation operator

  1. Describe how to evaluate a grouping query with aggregation operator MAX using a sorting based approach.
  2. Suppose that you are building a DBMS and want to add a new aggregate operator called SECOND LARGEST, which is a variation of the MAX operator. Describe how you would implement it.
  3. Give an example of how buffer replacement policies can affect the performance of a join algorithm.

Answers

Maurice Tutor
(5)
Status NEW Posted 21 Jul 2017 09:07 AM My Price 3.00

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