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

1. Which of the following best describe what could cause low utilization of query cache?

A) The Qcache_priority variable is set too small.
B) The CACHE_QUERY keyword is not being used.
C) The server might be trying to cache queries when it really isn't worth it.
D) The query cache size is too small.

2. What will be the results of the following query? (Choose three)
mysql> SELECT * FROM CountryLanguage PROCEDURE ANALYSE(10, 256)

A) For each column of the CountryLanguage table, a data type will be suggested that is just large enough to hold the data.
B) It will result in an error.
C) For each column of the CountryLanguage table, the data type will be changed to one that is just large enough to hold the data.
D) For each column of the CountryLanguage table, the minimum and maximum values will be listed.
E) For each column of the CountryLanguage table, the average value or average length will be listed.

3. Consider the following:
mysql> SHOW STATUS LIKE 'Qcache%'; +-------------------------+--------+ | Variable_name | Value | +-------------------------+--------+ | Qcache_free_blocks | 87 | | Qcache_free_memory | 318442 | | Qcache_hits | 11224 | | Qcache_inserts | 19215 | | Qcache_lowmem_prunes | 437 | | Qcache_not_cached | 9155 | | Qcache_queries_in_cache | 240 | | Qcache_total_blocks | 924 | +-------------------------+--------+
What can be derived from this output?

A) There is a normal utilization of the query cache.
B) There is a high utilization of the query cache.
C) There is a low utilization of the query cache.

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

5. Which of the following best describes how the binary log might be helpful in query optimization?

A) By identifying the WHERE clauses in queries for which indexes might be useful.
B) By checking the processor load it records when a query is executed.
C) By checking which queries it logs as slow.

Solutions: