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IBM Assessment: DB2 10.1 Advanced DBA for LUW Sample Questions:

1. A query against the system catalog revealed that data for a table named SALES in a partitioned database is distributed as follows:

What can be done to improve the performance of a query that joins SALES and DATE_DIM tables (where SALES is a fact table and DATE_DIM is a dimension table) using the DATE_ID column?

A) Create a replicated table REPL_DATE_DIM from the DATE_DIM table, refresh REPL_DATE_DIM table, create index on DATE_ID column in theREPL_DATE_DIM table, and collect statistics on REPL_DATE_DIM table.
B) Create a replicated table REPL_SALES from the SALES table, refresh REPL_SALES table, create index on DATE_ID column in theREPL_SALES table, and collect statistics on REPL_SALES table.
C) Reload table DATE_DIM and use only one partition with a collocated join to the SALES table using the primary key DATE_ID.
D) Reload table SALES and use only one partition with a collocated join to the DATE_DIM table using the primary key DATE_ID.

2. For a multi-partitioned database, what is the default behavior of the BACKUP DATABASE command?

A) It will backup just the catalog partition.
B) It will backup just the partitions that reside on the host that the command is executed from.
C) It will backup just the partition that the command is executed from.
D) It will backup all partitions simultaneously.

3. In what situation should you use a redirected restore operation?

A) You want to restore your table space containers into a different physical location.
B) You want to drop a storage group during a restore process.
C) You want to restore you table spaces into new storage groups.
D) You want to move data from one operating system to another.

4. Which Workload Manager (WLM) objects can the COLLECT ACTIVITY DATA clause be used with?

A) Data class, action class, and a threshold
B) Data class, work class, and a limit
C) Service subclass, work class, and a threshold
D) Service subclass, action class, and a limit

5. Given the following output:

Which Explain procedure can be used to find the most expensive SQL statement in terms of CPU cost over a period of time?

A) EXPLAIN_FROM_SECTION
B) EXPLAIN_FROM_DATA
C) EXPLAIN_FROM_ACTIVITY
D) EXPLAIN_FROM_CATALOG

Solutions: