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IBM DB2 10.1 Advanced DBA for Linux UNIX and Windows Sample Questions:

1. Consider the following statement:

Which indexes should be created for optimal query performance?

A) CREATE INDEX emp_idx ON employee (workdept, lastname, job); CREATE INDEX dept_idx ON department (deptname, deptno);
B) CREATE INDEX emp_idx ON employee (workdept); CREATE INDEX dept_idx ON department (deptno);
C) CREATE INDEX emp_idx ON employee (workdept) CLUSTER; CREATE INDEX dept_idx ON department (deptname, deptno);
D) CREATE INDEX emp_idx ON employee (lastname, job, workdept) CLUSTER; CREATE INDEX dept_idx ON department (deptname);

2. A DBA wants to create a table named SALES that has the following characteristics: ?effective data clustering and management of space utilization ?rows in the table should be clustered based on when they are added to the table Which clause must be used with the CREATE TABLE statement to define this table?

A) ORGANIZE BY INSERT TIME
B) ORGANIZE BY DIMENSIONS
C) ORGANIZE BY TIME PERIOD
D) ORGANIZE BY KEY SEQUENCE

3. A DBA wants to create a table named SALES that has the following characteristics:
- Data for the first half of the year will reside in table space TBSP1; the index for this data will reside in table space TBSP21. - Data for the second half of the year will reside in table space TBSP2; the index for this data will reside in table space TBSP22.
Which clause must be used with the CREATE TABLE statement to define this table?

A) ORGANIZE BY DIMENSIONS
B) ORGANIZE BY KEY SEQUENCE
C) PARTITION BY RANGE
D) DISTRIBUTE BY HASH

4. What is a benefit of multi-temperature data storage?

A) It helps improve data compression ratios.
B) It helps reduce storage costs for infrequently accessed data.
C) It helps identify data access patterns to aid in storage planning.
D) It helps reduce redundant I/O.

5. Which statement about compression dictionaries is FALSE?

A) Table-level dictionaries are stored in hidden rows within the table.
B) Page-level dictionaries are stored in hidden rows within the table.
C) Table-level dictionaries are automatically created or recreated as by the database manager as pages are filled.
D) Page-level dictionaries are automatically created or recreated by the database manager as pages are filled.

Solutions: