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IBM DB2 9.7 Advanced DBA for LUW Sample Questions:

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 (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 (year))
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, day))
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))

2. Your UNIX system administrator has indicated that there appears to be a lot of I/O wait time associated with your database, which is stored in a 7+p RAID array. An investigation reveals the following information: DB2_PARALLEL_IO=*
Tablespace with ID 7 has a single container and is dedicated to the largest table. It has a page size of 16K, an extent size of 32, and a prefetch size of 64.
Which setting would optimize I/O for the largest table?

A) DB2_PARALLEL_IO=7:64
B) DB2_PARALLEL_IO=7:32
C) DB2_PARALLEL_IO=7:16
D) DB2_PARALLEL_IO=7:7

3. Given the following statement: Which statement will successfully add a new partition to table T1 for April 2010?

A) Create a table with the same definition as the partitioned table; attach to the main partitioned table; data will be automatically redistributed across all table partitions.
B) Export data from the main partitioned table; create a table with the same definition as the partitioned table; attach to the main partitioned table; import data into the main partitioned table; run the SET INTEGRITY statement.
C) Create a table with the same definition as the partitioned table; load the new table with data; attach the new table to the main partitioned table; run the SET INTEGRITY statement.
D) Export data from the main partitioned table; drop the main partitioned table; create the main partitioned table with new partitioning range; import data into the main partitioned table.

4. Which series of items are required to establish a TCP/IP connection to a DB2 for z/OS database from a DB2 for Linux, UNIX, or Windows server?

A) hostname, logical unit (LU) name, subsystem ID, local database name, node name
B) hostname, port number/protocol, subsystem ID, local database name, node name
C) hostname, port number/protocol, target database name, local database name, node name
D) hostname, logical unit (LU) name, target database name, local database name, node name

5. Click the Exhibit button.

Refer to the table definition shown in the exhibit.
Which will improve performance based on the query SELECT c6, c9 FROM tab3 WHERE c9 = 123456?

A) CREATE INDEX idx99 ON tab3 (c6 ASC, c9 DESC); REORG TABLE myschema.tab3 AND INDEXES ALL;
B) CREATE INDEX idx98 ON tab3 (c6 ASC); CREATE INDEX idx99 ON tab3 (c9 DESC); RUNSTATS ON TABLE myschema.tab3;
C) CREATE INDEX idx98 ON tab3 (c2 ASC, c6 ASC); CREATE INDEX idx99 ON tab3 (c2 ASC, c9 ASC); RUNSTATS ON TABLE myschema.tab3;
D) CREATE INDEX idx99 ON tab3 (c2 ASC, c9 DESC); REORG TABLE myschema.tab3 AND INDEXES ALL;

Solutions: