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NEW QUESTION: 1
An administrator needs to design a distribution strategy for a star schema in a Redshift cluster. The administrator needs to determine the optimal distribution style for the tables in the Redshift schema.
In which three circumstances would choosing Key-based distribution be most appropriate? (Select three)
A. When the administrator needs to reduce cross-node traffic
B. When the administrator needs to optimize the fact table for parity with the number of slices
C. When the administrator needs to take advantage of data locality on a local node of joins and aggregates
D. When the administrator needs to optimize a large, slowly changing dimension table
E. When the administrator needs to balance data distribution and collocation of data
Answer: A,B,C

NEW QUESTION: 2
Which two statements are correct about try blocks? (Choose two.)
A. catch blocks must be ordered from generic to specific exception types.
B. A try block can have more than one catch block.
C. A try block must have a catch block and a finally block.
D. A finally block must be immediately placed after the try or catch blocks.
E. A finally block in a try-with-resources statement executes before the resources declared are closed.
Answer: A,B

NEW QUESTION: 3
You are designing your maintenance plan.
Which command should you use only during the monthly maintenance window?
A. ALTER INDEX SODIndex ON SalesOrderDetail REBUILD
B. ALTER INDEX SODIndex ON SalesOrderDetail REBUILD WITH (ONLINE * ON)
C. ALTER INDEX SODIndex ON SalesOrderDetail REORGANIZE
D. DBCC INDEXDEFRAG (ProdDB, SalesOrderDetail, SODIndex)
Answer: B
Explanation:
*Scenario: Database Issues
The current database does not perform well. Additionally, a recent disk problem caused the
system to go down, resulting in lost sales revenue. In reviewing the current system, you
found that there are no automated maintenance procedures. The database is severely
fragmented, and everyone has read and write access.
*After the degree of fragmentation is known, use the following table to determine the best
method to correct the fragmentation.
avg_fragmentation_in_percent value
/ > 5% and < = 30%
then use
ALTER INDEX REORGANIZE
/ > 30%
then use
ALTER INDEX REBUILD WITH (ONLINE = ON)
ALTER INDEX (Transact-SQL)