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IBM A2090-544 Exam Syllabus Topics:

IBM Assessment: DB2 9.7 Advanced DBA for LUW Sample Questions:

Question 1

The DBA needs to create a table with key columns YEARDAY, YEAR, and DAY. This table needs to be partitioned by column YEARDAY with three months per data partition. Additionally, data needs to be organized so that all rows within any three month date range are clustered together based on 12 months of data. Which CREATE TABLE statement will accomplish this objective?

A. CREATE TABLE tab1
(yearday INT,
year CHAR(2),
day INT))
PARTITION BY RANGE (yearday) (STARTING 201001 ENDING 201012 EVERY 3)
ORGANIZE BY DIMENSIONS (year, day))
B. CREATE TABLE tab1
(yearday INT,
year CHAR(2),
day INT))
PARTITION BY RANGE (yearday) (STARTING 201001 ENDING 201012 EVERY 3)
ORGANIZE BY DIMENSIONS (day))
C. CREATE TABLE tab1
(yearday INT,
year CHAR(2),
day INT))
PARTITION BY RANGE (yearday) (STARTING 201001 ENDING 201012 EVERY 3)
ORGANIZE BY DIMENSIONS (year))
D. CREATE TABLE tab1
(yearday INT,
year CHAR(2),
day INT))
PARTITION BY RANGE (year) (STARTING 201001 ENDING 201012 EVERY 3)
ORGANIZE BY DIMENSIONS (year, day))

Question 2

What steps, in the correct order, are performed by the SQL and XQuery compilers to generate executable code for non-federated queries?

A. parse query; check semantics; rewrite query; build access plan
B. parse query; rewrite query; check semantics; pushdown predicates; execute access plan
C. check semantics; parse query; rewrite query; build access plan
D. check semantics; parse query; build access plan; pushdown predicates; execute access plan

Question 3

When the DBA chooses the dimensions for a multi-dimensional clustering (MDC) table, which two characteristics should be considered? (Choose two.)

A. numeric data versus character data
B. prefetch size
C. the query transaction rate
D. the combined cardinality of the candidate columns
E. extent size

Question 4

Which command will prevent prefetching during crash recovery?

A. db2set DB2_RECOVERY_PREFETCHING=NO
B. db2set DB2_AVOID_PREFETCH=OFF
C. db2set DB2_AVOID_PREFETCH=ON
D. db2set DB2_RECOVERY_PREFETCHING=YES

Question 5

Which command will back up a database named SAMPLE to a TSM server using two concurrent TSM client sessions?

A. BACKUP DATABASE sample USE TSM OPEN 2 SERVERS WITH 4 BUFFERS
B. BACKUP DATABASE sample USE TSM OPEN 4 SERVERS WITH 2 BUFFERS
C. BACKUP DATABASE sample USE TSM OPEN 4 SESSIONS WITH 2 BUFFERS
D. BACKUP DATABASE sample USE TSM OPEN 2 SESSIONS WITH 4 BUFFERS

Solutions: