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IBM P2090-050 exam questions
IBM PureData System for Analytics Technical Mastery Test
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The safer , easier way to help you pass any IT exams. 1.Using a date column as a distribution key may distribute rows evenly across dataslices, why is this a
poor choice of a distribution key?
A. Queries on the table will invoke compression.
B. Queries on date range may involve processing skew.
C. Queries on date range will utilize only host processing.
D. Queries on the table will invoke compression on the date columns.
Answer: B
2.What is the host Linux file that must be modified to adjust optimizer settings permanently?
A. /nz/data/postgresql.conf
B. /nz/data/config/system.cfg
C. /nz/kit/sys/initTopology.cfg
D. /nz/kit/log/sysmgr/sysmgr.log
Answer: A
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3.Given a plan ID, how would you obtain the query execution plan? (Choose two.)
A. Turn ODBC tracing ON.
B. Issue "SELECT * FROM _V_SESSION;"
C. Go to the query history within the Windows NzAdmin GUI tool.
D. Run EXECUTION PLAN before the query has been submitted.
E. Issue "SHOW PLANFILE;" after the query has been submitted.
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Answer: C,E
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4.Which statement describes administrative privileges?
A. Provides audit functionality for the database.
B. Manages resource allocations for concurrent processing.
C. Gives permission to execute global operations and to create objects.
D. Gives additional storage to select members of the administrator group.
Answer: C
5.Given the following query: Select count(*) from TableA;
How can you view the query plan without executing the query?
A. Use explain.
B. Use statistics.
C. Use pg.log file.
D. Set show_plan = true;
Answer: A
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