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Q11. Consider a table my_table , with contents shown:
You execute: SELECT a b, b a
FROM my_table WHERE a < s ORDER BY b;
What does this statement return?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: A
Q12. You attempt to create two new tables: CREATE TABLE ‘warehouse’ (
‘id’ int (11) NOT NULL AUTO_INCREMENT,
‘name’ varchar (20) NOT NULL, ‘phone’ varchar (20) NOT NULL,
PRIMARY KEY (‘ id)
) ENGINE=MyISAM
CREATE TABLE ‘warehouseitem’ ( ‘warehouse_id’ bigint (11) NOT NULL, ‘item_id’ int (11) NOT NULL,
‘count’ int(11) NOT NULL DEFAULT ‘0’,
KEY “warehouse_id’ (‘warehouse-id) ,
FOREIGN KEY (warehouse_id) REFFERENCES warehouse (id)
) ENGINE= InnoDB
You get this error :
ERROR 1215 ( HYooo): cannot add foreign key constraint
Which two changes are required to permit these statements to execute without any error?
A. The ‘warehouseitem’ table must be managed by the MySAm storage engine.
B. The ‘warehouse-table must be managed by the InnoDB storage engine.
C. The foreign key clause must be reversed: FOREIGN KEY warehouse(1)REFERENCES (warehouse-id).
D. The data types of the ‘warehouse’.’id’ and ‘ warehouseitem.warehouse_is columns must match.
E. The warehouse_id’ column must be renamed ‘id’ to match the definition on the ‘warehouse’ table.
F. A UNIQUE key must be defined for the columns (‘item_id’,’warehouse_id’).
Answer: C,D
Q13. Which three statement types can be prepared?
A. LOAD DATA INFILE
B. CREATE TABLE
C. CREATE VIEW
D. ALTER VIEW
E. CALL
Answer: B,C,E
Explanation: http://dev.mysql.com/doc/refman/5.6/en/sql-syntax-prepared-statements.html
Q14. The application logs contain many entries of the following:
ERROR 1153 (OSSO1): Got a packet bigger than ‘max_allowed_packet’ bytes With two scenarios can (Hibernate this error message?
A. The application tried to INSERT a row that exceeded max_allowed_packet.
B. The network caused an error Inducing the max_allowed_packet error.
C. The application did not use the COMPRESS () function for a large result set.
D. The application tried to SELECT many rows together that exceeded max allowed_packet.
E. The application tried to SELECT a row that exceeded max_allowed_packet.
F. The operating system caused an error inducing the max_allowed_packet error.
Answer: A,F
Q15. Consider the content of the class and student tables: Class
Which three queries produce the same result?
A. SELECT *
FROM class
INNER JOIN student
ON class.class_id=student.class_id
B. SELECT *
FROM JOIN student LEFT JOIN student
ON class. Class.class_id=student.class_id
C. SELECT *
FROM class
INNER JOIN student
WHERE NOT ISNULL (student.class_id)
D. SELECT *
FROM JOIN student
On class .class_id=student.class_id WHERE NOT ISNULL (student.class_id)
E. SELECT *
FROM student RIGHT JOIN class
ON class.class_id=student.class_id
Answer: D
Q16. As a developer, you inherit this table as part of a project: CREATE TABLE exam (
Exam_id INTEGER UNSIGNED NOT NULL PRIMARY KEY,
Examinee_id INTEGER UNSIGNED UNIQUE, Score INTEGER UNSIGNED
)
What change should you make to ensure that examinee_id is an integer value throughout the table?
A. The examinee_id column should be designated as PRIMARY KEY.
B. A NOT NULL qualifier should be moved from exam-id to examinee-id.
C. The PRIMARY KEY should be dropped and re-created as PRIMARY KEY (examinee-id, exam_id).
D. A NOT NULL qualifier should be added to examinee_id.
Answer: A
Q17. Which Three options describe benefits of using the InnoDB memcached API?
A. Provides a simple, well supported method for accessing and updating data.
B. Provides a total in –memory storage system that eliminates disk1/0 overhead.
C. Bypasses the SQL layer thus avoiding extra processing.
D. Implements a fast caching mechanism to replace the query cache.
E. Provides protection via InnoDB buffers and crash recovery.
Answer: C,D,E
Q18. A statement exists that can duplicate the definition of the ‘world’table.
What is missing?
CREATE TABLE t1 world
A. FROM
B. USING
C. COPY
D. LIKE
Answer: D
Q19. Which three database objects have non-case-sensitive names on all operating system?
A. Table
B. Column
C. Index
D. Stored procedure
E. Trigger
Answer: A,B,C
Q20. You are connected to a MySQL server and using a prepared statement. You accidentally exit your session.
What will happen if you log back in to use your prepared statement?
A. The statement exists, but will need to be deallocated and re-created.
B. The statement exists, but the user variables need to be redefined.
C. The statement can be used, if the MySQL server hasn’t been restarted.
D. The statement no longer exists.
Answer: A
Explanation: Reference:http://dev.mysql.com/doc/refman/5.0/en/sql-syntax-prepared-statements.html
