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

1. How can the SHOW PROCESSLIST command be helpful when optimizing queries?

A) If checked periodically, it can reveal a queries that causes other queries to hang.
B) It shows how the server processes a query.
C) It shows if a query is using an index or not.
D) It shows the percentage of processing power that each query is using on a server.

2. Which of the following statements are true regarding the slow query log? (Choose four)

A) The slow query log can be switched on with the log_slow_queries option.
B) The slow query log will contain queries that take more than 10 seconds.
C) The slow query log is always enabled.
D) The slow query log will contain queries that take more seconds than configured in the long_query_time option.
E) You can use the mysqldumpslow command line tool to summarize the content of the slow query log.
F) The slow query log contains queries that don't utilize any index.
G) To have the slow query log contain queries that don't utilize any index, the log-queriesnotusingindexes option needs to be set.
H) You can use the SHOW SLOW QUERIES statement to display all entries in the slow queries log.

3. Which factors can be considered in a stored routine to allow or disallow access or modification of data? (Choose two)

A) The identity of the client user
B) The CPU load of the system
C) The current date and time
D) The number of current connections

4. Consider the following:
+----+-----------------+--------------+
| id | PartName | Location |
+----+-----------------+--------------+
| 1 | 40GB Hard Drive | Jacksonville |
| 2 | 1GB DDR | Atlanta |
| 3 | Keyboard | San Jose |
| 4 | Monitor | Harrisburg |
| 5 | USB Drive | Miami |
| 6 | DVD/R | Jacksonville |
+----+-----------------+--------------+
Which of the following best describes why this table should be split into a part and location table?

A) This table should not be split as it is already in third normal form.
B) Because it has multiple repeating groups in each row.
C) Because it has redundant location values.

5. Should all queries in the slow query log be optimized? (Choose two)

A) Yes, unless they depend on tables in the mysql database
B) Yes.
C) No; Queries that are run rarely are probably not worth the effort of optimization
D) No; Only the very slowest queries should be optimized
E) No; A query may have been entered into the slow query log because other, slow queries, prevented it from executing quickly

Solutions: