IBM C2090-730 : DB2 9 Family Fundamentals

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IBM DB2 9 Family Fundamentals Sample Questions:

1. Which of the following statements is used to revoke all DML privileges on table EMPLOYEE from user TOM?

A) REVOKE ALL ON EMPLOYEE FROM USER tom
B) REVOKE PRIVILEGES ON EMPLOYEE FROM USER tom
C) REVOKE ALL PRIVILEGES FROM USER tom
D) REVOKE EXECUTE ON EMPLOYEE FROM USER tom

2. Which of the following is NOT true about schemas?

A) When most database objects are created, they are either implicitly or explicitly assigned to a schema
B) The value assigned to the CURRENT SCHEMA special register is persistent across database restarts
C) A schema enables the creation of multiple objects in a database without encountering namespace collisions
D) If a schema name is not specified, either by qualifying a database object name or by executing the SET CURRENT SCHEMA statement, the authorization ID of the current session user is used as the schema name by default

3. A DBA has been asked to create a table which will contain a substantial amount of detailed sales information for each calendar month and maintain it to contain only the last 12 months. Which of the following methods will facilitate the online removal of the oldest month's data?

A) Create a single table, extract the data to be retained using UNLOAD with a SELECT statement, drop and re-create the table then load only the data to be retained.
B) Create an MQT that selects the oldest month of data with the REFRESH IMMEDIATE option.
C) Create 12 separate tables, create a view based on all 12, drop the table with the oldest month's data then drop and re-create the view.
D) Create a range partitioned table, partitioned by month, and use the ALTER TABLE statement to detach the oldest month and attach storage for new data.

4. Which of the following is NOT an accurate statement about views?

A) Views can be used to restrict access to columns in a base table that contain sensitive data
B) Views can be used to store queries that multiple applications execute on a regular basis in a database
C) Views support INSTEAD OF triggers
D) Views are publicly referenced names and no special authority or privilege is needed to use them.

5. Application A issues the following SQL statements within in a single transaction using the
Uncommitted Read isolation level:
SELECT * FROM employee WHERE deptno='A00';
UPDATE employee SET salary = salary * 1.1 WHERE deptno='A00';
As long as the transaction has not been committed, which of the following is true for all other
applications not running under the Uncommitted Read isolation level?

A) They can read but not make changes to data for any employee in department A00.
B) They can read and make changes to data for any employee in department A00.
C) They must wait until the transaction is committed before accessing data of any employee in department A00.
D) They must wait until application A disconnects before accessing data of any employee in department A00.

Solutions: