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IBM DB2 9.7 Advanced DBA for LUW Sample Questions:

1. A table named TAB_A was created with the COMPRESS YES option specified and populated with 100,000 rows. If a DBA wants to create an index on table TAB_A, which statement is true?

A) In order for the index to be compressed, it must be enabled for compression by specifying the COMPRESS YES option in the CREATE INDEX statement used to create it; however, the index will not be compressed until the ALTER INDEX command is used to create an index compression dictionary.
B) The index will automatically be compressed since the table it is associated with is compressed; the ALTER INDEX command does not have to be executed.
C) The index will automatically be enabled for compression because the associated table is compressed; however, the index will not be compressed until it is REORGed.
D) In order for the index to be compressed, it must be enabled for compression by specifying the COMPRESS YES option with the CREATE INDEX statement that is used to create it.

2. Setting the DB2_FMP_COMM_HEAPSZ=0 will result in which the following?

A) Non-fenced routines can be invoked, however automatic database maintenance will be disabled.
B) In a partitioned environment, communications will not be buffered.
C) In a partitioned environment, infinite communications will be enabled between partitions.
D) User-defined function calls will be disabled.

3. Given INTRA_PARALLEL is OFF, average row length is 900 bytes, and temporary table cardinality is 1000, which setting would prevent a SORTHEAP overflow when the temporary table is sorted?

A) SORTHEAPTHRES 10000K
B) SORTHEAP AUTOMATIC, SHEAPTHRES 10000K
C) SORTHEAPTHRES 10000K, SORTHEAP 250K
D) SORTHEAP AUTOMATIC, SHEAPTHRES 0

4. What are the steps required to remove July 2005 data from a partitioned table and replace with it with July 2010 data?

A) 1) Detach partition containing July 2005 data 2) Load July 2010 data into a new table 3) Attach the new table as a new partition in the existing partitioned table 4) Check constraint integrity for the partitioned table
B) 1) Detach partition containing July 2005 data 2) Load July 2010 data into a new table 3) Attach the new table as a new partition in the existing partitioned table 4) Reorg the partitioned table
C) 1) Detach partition containing July 2005 data 2) Load July 2010 data into a new table 3) Attach the new table as a new partition in the existing partitioned table 4) Rebind the partitioned table
D) 1) Detach partition containing July 2005 data 2) Load July 2010 data into a new table 3) Attach the new table as a new partition in the existing partitioned table 4) Update statistics on the partitioned table

5. Table T1 was created by executing the following statement:

Immediately after creation, table T1 was populated with 10 rows. Later, user USER1 ran an application that inserted 100,000 rows into table T1. The following query is frequently ran against the T1 table:
SELECT deptno, empno, deptname FROM t1 WHERE deptno = 'EN' AND empno = '123' Assuming current statics exist for the table and index, which index will provide optimal performance for this query?

A) CREATE INDEX idx1 ON t1 (deptno) INCLUDE (empno)
B) CREATE INDEX idx1 ON t1 (deptno)
C) CREATE INDEX idx1 ON t1 (deptno, empno) INCLUDE (deptname)
D) CREATE INDEX idx1 ON t1 (deptno, empno)

Solutions: