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Question ID 2552

You execute the following query:
 
 
Which statement is true about the usage of these hints in the query?

Option A

A.    The optimizer pushes the join predicate into the inline view.
 

Option B

B.    The optimizer evaluates the subquery as a first and then filters out rows.
 

Option C

C.    The optimizer performs a join operation first and then filters out the rows.

 

Option D

D.    The hint will have no effect because one of the join resultsets is an inline view.

Correct Answer A
Explanation


Question ID 2553

Examine the initialization parameters for a database an OLTP overload.
 
What is the effect of changing the value of the parameter?

Option A

A.    It influences the optimizer to always use the value of the parameter?
 

Option B

B.    It influences the optimizer to use indexes instead of full table scans as the estimated cost of the using index is reduced.
 

Option C

C.    It influences the optimizer to use full table scans instead of index scans as the estimated cost of full table scan is reduced.
 

Option D

D.    It influenced the optimizer to use bitmap indexes as the estimated cost conversion from bimap is rowed us reduced.
 

Correct Answer B
Explanation

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