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MYSQL MySQL 5.0 Database Administrator Certified Professional Exam, Part II Sample Questions:

1. Which of the following statements about MEMORY tables are true? (Choose two)

A) The number of MEMORY tables on a server will not cause any performance problems.
B) Creating many MEMORY tables should be avoided.
C) MEMORY tables should not be used to store large amounts of data.
D) It is OK to store large amounts of data in MEMORY tables.

2. Which of the following statements about the slow query log is true?

A) The slow query log will always contain just slow queries.
B) The slow query log may not always contain just slow queries.
C) The slow query log always logs more than just slow queries.

3. Which of the following best describe the purpose of the long_query_time variable?

A) It is used to tell the server after how many seconds to abort a query.
B) It is used to tell the server when to log a query as slow.
C) It is used to see the time it took the last longest query to run.
D) It is used to tell the server the total CPU seconds that are allotted to a client connection before it shut down.

4. You have been granted SELECT, INSERT and DELETE privileges on the table city in the world database. You log in, and exercise all your privileges without any problems. While you are still connected and doing work, the administrator removes your DELETE privileges and informs you by mail that you can no longer delete from table city. Being skeptical, you decided to test your privileges and realize that you still have them all. What is are the most likely causes of this? (Choose two)

A) The administrator forgot to revoke your UPDATE privilege
B) The administrator forgot to revoke your SELECT privilege
C) The administrator did not execute FLUSH PRIVILEGES
D) The administrator removed the DELETE privilege by performing an UPDATE directly on the mysql.table_priv table

5. In the following query, the Population column is indexed: mysql> EXPLAIN SELECT Name -> FROM Country -> WHERE Code LIKE '%B%' AND Population > 10000 *************************** 1. row *************************** id: 1 select_type: SIMPLE table: Country type: ALL possible_keys: i_pop key: NULL key_len: NULL ref: NULL rows: 239 Extra: Using where
Which of the following best describes how to deal with the key value of the EXPLAIN output? (Choose two)

A) Use USE POSSIBLE_KEY
B) Use FORCE INDEX.
C) Use FORCE KEY
D) Use USE INDEX.

Solutions: