IBM Certification Question:
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Explain Which of the following is required for the DB2 optimizer to consider a hash join strategy?

A. Equijion predicates
B. Optimization level 1 or above
C. Registry variable DB_ANTIJOIN=YES
D. SORTHEAP large enough to contain the tables being joined


A.Equijion predicates

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Explain What is database administration NOT concerned with?

A. indexing
B. creating tables
C. accessing data
D. application building
Suppose a customer is attempting to determine what failed during the last boot sequence of the Linux
partition. Which of the following can be used to determine the error condition?

A /var/log/messages
B /proc/startup
C /usr/sbin/log
D /etc/boot