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000-M87 IBM Netezza Technical Mastery Test v1 ACE Acrobat, ACE AfterEffects, ACE Captivate, ACE ColdFusion
,ACE Dreamweaver,ACE Flash, ACE Flex, ACE FrameMaker,ACE GoLive,ACE Illustrator,ACE InDesign,ACE LiveCycle,ACE Premiere,ACE RoboHelp, Adobe Certification, Photoshop,Photoshop Certified Expert

Zertifizierungsprüfung 000-M87 ibm

QUESTION NO: 1
Which of the following statements is the LEAST accurate?

A. Skew can sometimes cause the optimizer to broadcast data during a query.
B. Skew can occur when more data in a table is on one disk than others due to a sub-optimal distribution key.
C. Skew can occur despite evenly distributed tables when more data ends up on one Snippet Processor while a query is being processed.
D. Skew can cause query performance problems.

Answer: A

QUESTION NO: 2
Which of the following statements is MOST TRUE?

A. Statistics have no impact on ZoneMaps.
B. ZoneMaps are disabled for a table while Statistics are being run.
C. The ability to generate ZoneMaps and generate Statistics can both be assigned to users via permissions.
D. Statistics and ZoneMaps are both used by the optimizer to choose an optimal query plan.

Answer: B

Zertifizierungsprüfung 000-M87 ibm