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

1. Which of the following statements are true regarding the structure of grant tables in new distributions?

A) They are often changed.
B) They remain the same for backwards compatibility.
C) They change with every upgrade.

2. Consider the following EXPLAIN output. mysql> EXPLAIN SELECT Name FROM City WHERE Population > 8000000 *************************** 1. row *************************** id: 1 select_type: SIMPLE table: City type: ALL possible_keys: NULL key: NULL key_len: NULL ref: NULL rows: 4079 Extra: Using where
Which of the following statements are true? (Choose three)

A) No index could be used to perform the query.
B) All 4079 rows of the table need to examined.
C) The query cannot be optimized any better.
D) The Name column should be indexed.
E) The Population column should be indexed.

3. Which of the following optimizations could be made based on data collected in the slow query log? (Choose four)

A) Rewrite queries to perform more efficiently.
B) Change the storage engines in use.
C) Normalize data or add indexes to the tables that the queries use.
D) Make changes to the network infrastructure.
E) Tune server parameters.

4. Which of the following best describes the purpose of the InnoDB buffer pool?

A) It caches data and index information for InnoDB tables.
B) It is the amount of buffers available during a transaction.
C) It holds changes made during a transaction before they are written to the log.

5. Which of the following best describes what you might expect after disabling InnoDB at run time?

A) It will disable InnoDBs associated memory buffers and data structures, however it will not save any memory.
B) It will still enable InnoDBs associated memory buffers and data structures, however it will save memory.
C) It will disable InnoDBs associated memory buffers and data structures, which will save memory.

Solutions: