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

1. The stored function year_to_date is created by the 'root'@'localhost' account as follows:
CREATE FUNCTION year_to_date ()
RETURNS DECIMAL(10,2)
SQL SECURITY DEFINER
BEGIN ... END;
Within the routine body, a number of calculations are made on data in the financials table and the calculated value is returned. The only account which can access the financials table is 'root'@'localhost'.
If a client connects with the account
'joe'@'localhost' and calls the year_to_date function, what will happen?

A) If the account 'joe'@'localhost' has the EXECUTE privilege on year_to_date, the function will complete successfully
B) The function will not execute as SQL SECURITY DEFINER has been specified. It would execute if instead SQL SECURITY INVOKER had been specified
C) The function will not execute, as 'joe'@'localhost' does not have access to the financials table
D) The function will always execute as if it was 'root'@'localhost' that invoked it since SQL SECURITY DEFINER has been specified.

2. Which of the following best describes the relationship between MAX_ROWS, AVG_ROW_LENGTH and the max table size?

A) MAX_ROWS * AVG_ROW_LENGTH tells MySQL how large you expect the table to grow to.
B) Specifying MAX_ROWS and AVG_ROW_LENGTH will prevent MySQL from growing the table beyond that limit.
C) MAX_ROWS + AVG_ROW_LENGTH tells MySQL to not let the table grow past that size.
D) Specifying MAX_ROWS and AVG_ROW_LENGTH doesn't prevent MySQL from growing the table beyond that limit.

3. Consider the following:
mysql> EXPLAIN SELECT * FROM City WHERE Name = 'Jacksonville' AND CountryCode =
'USA'
*************************** 1. row ***************************
id: 1
select_type: SIMPLE
table: City
type: ref
possible_keys: name_country_index
key: name_country_index
key_len: 13
ref: const,const
rows: 1
Extra: Using where
Which of thefollowing best describes the meaning of the value for the key_len column?

A) It shows how big the indexes are.
B) It shows how many results will be returned.
C) It shows how many columns are examined.
D) It shows how many bytes will be used from index rows.

4. Privileges for using stored routines can be specified at the following levels: (Choose three)

A) Per database
B) Server-wide
C) Per routine
D) The ability to use stored procedures is not governed by the privilege system.

5. Which of the following best describe the effects on performance for the dynamic-row format for
MyISAM has? (Choose two)

A) Retrievals are less complex and are faster.
B) Rows generally take up less disk space than fixed-row format.
C) Rows generally take up more disk space than fixed-row format.
D) Retrievals are more complex and slower.

Solutions: