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QUESTION NO:48

Assuming the user has just connected to the MySQL server, what will the result of the

following query be?

A. An error saying that a is undefined.

B. A single null.

C. An empty string.

D. It depends on whether a persistent user variable named a has been set by this user

previously.

Answer: B

QUESTION NO:34

Which of the following statements best describe why prepared statements are useful:

A. They often reduce the amount of code you have to write.

B. They often improve transaction support.

C. They often improve performance when using with stored procedures.

D. They often reduce parsing time when performing several similar queries

Answer: D

QUESTION NO:52

Consider the following query, which is executed within a stored routine:

SELECT Population INTO pop FROM Country WHERE Region =

Assuming this query returns no results, what will be the contents of the variable pop? Will

warnings or errors be issued?

A. pop will be set to NULL

B. pop will remain unchanged

C. pop will be set to the DEFAULT value of it\’s declaration

D. An error will be issued

E. A warning will be issued

F. No warning or error will be issued

Answer: B,E

QUESTION NO:45

Consider the structures of the country and countryLanguage tables.

mysql > DESCRIBE Country;

Which of the following queries will give you the list of all European countries where German

is spoken?

A. SELECT Code AS c. Name FROM Country

WHERE Continent = \’Europe\’ AND EXISTS (SELECT * FROM CountryLanguage WHERE

CountryCode = c AND Language = \’German\’J

B. SELECT Code AS c. Name FROM Country

WHERE Continent = \’Europe\’ AND EXISTS IN (SELECT * FROM CountryLanguage

WHERE CountrvCode = c Mini\’ uctiiguctge

QUESTION NO:64

Which of the following are valid ways of returning information on whether the field value is

present in the table animals?

A. SHOW COLUMNS FROM animals

B. SHOW COLUMNS FROM animals WHERE Field = \’value\’

C. SHOW value FROM animals

D. SELECT COLUMNS FROM animals. Value

E. SELECT COLUMNS.value FROM animals WHERE Field = \’value\’

Answer: A,B,C

QUESTION NO:10

Using column prefix indexing helps reduce

A. The amount of time to write a query

B. The number of results returned

C. The amount of disk I/O needed

D. The amount of disk space needed

Answer: C,D

QUESTION NO:6

For maximum efficiency in join operations of one column from each of two tables, which of

the following statements regarding indexes are true?

A. In a LEFT JOIN such as table1 LEFT JOIN table2 ON table1 .a = table2.b, the column b in

table2 should always be indexed

B. A LEFT JOIN would not benefit from either of the participating columns being indexed

C. In an INNER JOIN, either, but not both, columns participating in the join should be

indexed

D. In an INNER JOIN, both columns participating in the join should be indexed

E. An INNER JOIN would not benefit from either of the participating columns being indexed F.

In a LEFT JOIN such as table 1 LEFT JOIN table2 ON table 1 .a = table2.b, the column a in

table 1should always be indexed

Answer: A,D

QUESTION NO:53

Which of the following, when enabled, can prevent a client from ciefining stored routines?

A. The slow query log P

B. The binary log r

C. The general query log r

D. None of the above has any effect on defining stored routines

Answer: B

QUESTION NO:61

Which of the following events can be associated with triggers?

A. ELECT

B. DELETE

C. UPDATE

D. All of the above

Answer: A,C,D

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