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Question ID 2613

Examine the following command:
 
Which query transformation technique is used by the optimizer in this case?
 

Option A

A.    View merging
 

Option B

B.    Filter push-down
 

Option C

C.    Predicate pushing
 

Option D

D.    Predicate move-around

Correct Answer C
Explanation


Question ID 2614

You identified some DSS queries that perform expensive join and aggregation operations. The queries access historical data from noncurrent partition of the fact tables.
What three actions could you perform to improve the response time of the queries without modifying the SQL statements?
 

Option A

A.    Set the QUERY_REWRITE_ENABLED to TRUE at the session level.
 

Option B

B.    Create an STS for the statements, run SQL Tuning Advisor for the STS, and implement any generated recommendations for materialized views.
 

Option C

C.    Set QUERY_REWRITE_ENABLED to TRUE at the instance level.
 

Option D

D.    Create an STS for the statements, run SQL Access Advisor for the STS, and implement any generated recommendations for materialized views.
 

Option E

E.    Set QUERY_REWRITE_INTEGRITY to ENFORCED at the instance level.
 

Correct Answer A,C,D
Explanation

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