What is the primary function of the global query optimizer in distributed query processing?Question 11Select one:A.To distribute queries to the appropriate local sitesB.To encrypt the query dataC.To compress the query resultsD.To maintain data consistencyE.To manage data replication
Question
What is the primary function of the global query optimizer in distributed query processing?Question 11Select one:A.To distribute queries to the appropriate local sitesB.To encrypt the query dataC.To compress the query resultsD.To maintain data consistencyE.To manage data replication
Solution
The primary function of the global query optimizer in distributed query processing is A. To distribute queries to the appropriate local sites.
In a distributed database system, the global query optimizer plays a crucial role in determining the most efficient way to execute a query by considering the distribution of data across different sites. It decides which operations should be performed at which sites and in what order, aiming to minimize the total cost of query execution. This involves distributing queries to the appropriate local sites where the relevant data is stored.
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