Concurrency-control-Management-of-DD-W9-help

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Write two to three paragraphs answering one of the following questions: 

  • What is concurrency control? How are locks and schedulers used to resolve concurrency conflicts?
  • What is the difference between a rule-based optimizer and a cost-based optimizer?

Be sure to cite your references. 

YOU MUST:

TOP – Write your guess in your own words at the top.

BOTTOM – Write the right answer in your own words at the bottom.

 
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