参考書 000-M87 ibm 資格認定

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000-M87 IBM Netezza Technical Mastery Test v1 日本国内における最も信頼できるIT試験専門家として、最新の品質の高いIT試験の学習資料を提供し、お客様のために試験に順調に合格することを助けます.最高品質問題集/試験問題集100パーセント品質保証.問題集は弊社の数名のIT専門家より心をこめて編集して整理されたもので、正確率が99%以上に達します.

参考書 000-M87 ibm 資格認定

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

参考書 000-M87 ibm 資格認定