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

1. How can stored routines be used to check for constraints or legality

A) They cannot be used to check for constraints or legality of data.
B) They can make use of the VALIDATE DEFINER setting.
C) They can check and only perform an action if the incoming values match a specified value.

2. Which of the following best describes the purpose of the record buffer (as controlled through the read_buffer_size variable), and how it is set? (Choose two)

A) The record buffer is set per connection.
B) The record buffer is used for operations such as ORDER BY or GROUP BY.
C) The record buffer is used to perform sequential table scans, reducing the number of reads from disk
D) The record buffer is global and is only set by restarting the server.

3. Consider the following: mysql> EXPLAIN SELECT Name FROM Country WHERE Code = 'CAN' *************************** 1. row *************************** id: 1 select_type: SIMPLE table: Country type: const possible_keys: PRIMARY key: PRIMARY key_len: 3 ref: const rows: 1 Extra: Which of the following best describes the meaning of the value of the type column?

A) The table has exactly one row.
B) Only one row of all its rows need to be read.
C) Several rows may be read from the table.

4. Consider the following: mysql> EXPLAIN SELECT Name FROM Country WHERE Population BETWEEN 1 AND 10000 *************************** 1. row *************************** id: 1 select_type: SIMPLE table: Country type: range possible_keys: i_pop key: i_pop key_len: 4 ref: NULL rows: 10 Extra: Using where
What is the meaning of the range value of the type column?

A) The index is used to select rows that fall between a range of index values.
B) There is a range of indexes that can be used.
C) The type of index uses the range algorithm.
D) The optimizer has determined that only data from the very beginning or the very end of the table is needed

5. Consider the following two partial outputs of the SHOW VARIABLES command on a master and slave server: Master:
+--------------------------+---------------------------+
| Variable_name | Value |
+--------------------------+---------------------------+
| connect_timeout | 5 |
| log_bin | ON |
| max_connections
| 100 |
| shared_memory_base_name | MYSQL |
| server_id | 2 |
| tmp_table_size | 5242880 |
| version | 5.0.13-rc-nt |
Slave:
+--------------------------+---------------------------+
| Variable_name | Value |
---------------------------+---------------------------+
| connect_timeout | 5 |
| log_bin | ON |
| max_connections | 10 |
| shared_memory_base_name | MYSQL |
| server_id | 2 |
| tmp_table_size | 4266336 |
| version | 5.0.16-rc-nt |
There is apparently a problem with the slave replicating from the master. Which of the following best describes the most likely problem?

A) The version of the slave is newer than the version of the master.
B) The max_connections variable needs to be increased.
C) The server_id is not unique.
D) The connect_timeout variable needs to be increased.

Solutions: