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IBM DB2 10.1 Advanced DBA for Linux UNIX and Windows Sample Questions:
1. Which would not significantly benefit from having the RUNSTATS command run on it?
A) Tables that have had little change.
B) Tables that have been populated with a LOAD operation.
C) Tables where a new index has been created.
D) Tables that have been reorganized (using REORG).
2. 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_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.
B) Reload table SALES and use only one partition with a collocated join to the DATE_DIM table using the primary key DATE_ID.
C) 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.
D) Reload table DATE_DIM and use only one partition with a collocated join to the SALES table using the primary key DATE_ID.
3. Which statement about block indexes is correct?
A) The records for each block are retrieved using a mini-relational scan of saved data pages.
B) Because of their large size, block indexes are extremely efficient.
C) Prefetching of data pages relies on sequential detection when block indexes are used.
D) Block indexes improve performance when data is not clustered on sequential pages.
4. Which item is NOT eligible for adaptive compression?
A) Temporary tables
B) Indexes
C) Base tables
D) Inline LOB values
5. After starting a series of LOAD operations it appears that one LOAD is failing. What diagnostic tool would you use to determine which LOAD operation is being problematic?
A) db2pd
B) db2fodc
C) db2ls
D) db2dart
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: C | Question # 3 Answer: C | Question # 4 Answer: A | Question # 5 Answer: A |




