Oracle Oracle Database Application Development 1Z0-882 Questions & Answers

• Question 91:

  You try to add a foreign key to the InnoDB table employees:

  Mysq1> ALTER TABLE employees ADD FOREIGN KEY (Department_ID) REFERENCES departments (Department_ID); ERROR 1215 (HY000): cannot add foreign key constraint

  Which command will provide additional information about the error?

  A. SHOW ERRORS

  B. Error 1215

  C. SHOW ENGINE INNODB STATUS

  D. SELECT FROM information_schema.INNODB_SYS_FOREIGN

  Correct Answer: C

• Question 92:

  Identity two ways to configure a PHP application to use the UTF8 character set.

  A. mysqli: :query (`'SET NAMES utfs'');

  B. mysqli : :set_charset (`utf8')

  C. spdo = new PDO (`'mysql:host=localhost;dbname=test;charset=utfs'', user'', `'pass'');

  D. PDO: :set_charset(`'utf8'')

  Correct Answer: B

• Question 93:

  The data from t1 table is:

  

  Assuming You want to see this output: Which query achieves the preceding result?

  

  A. SELECT name FROM t1 WHERE name LIKE ,_e%

  B. SELECT name FROM t1 WHERE name LIKE,e%.;

  C. SELECT name FROM t1 GROUP BY name ORDER by name LIMIT 1,1;

  D. SELECT name FROM t1 GROUP BY name HAVING sun ( marks)=176 ORDER BY name;

  Correct Answer: C

• Question 94:

  Which three are valid identifiers for the user table in the mysq1 database?

  A. myssq1. user

  B. `mysq1. user'

  C. `mysq1'. `user'

  D. Mysq1. `user'

  E. `'mysq1. User''

  Correct Answer: AD

• Question 95:

  Which two Functions can be used in a C program to retrieve information about warning?

  A. mysql_info

  B. mysql_error

  C. mysql_warning_count

  D. mysql_errno

  Correct Answer: AB

• Question 96:

  You wish to create a trigger on the `city' table that will check the value of the `District' field before any

  INSERT. The trigger needs to change it to" Unknown" for an empty string or NULL.

  CREATE TRIGGER City_bi

  BEFORE INSERT ON CITY

  FOR EACH ROW

  BEGIN

  IF OLD. District IS NULL OR OLD.District= . .

  THEN

  SET NEW.District='Unknown';

  END IF :

  END;

  Does the CREATE TRIGGER statement accomplish this goal?

  A. Yes; the trigger works correctly.

  B. No; FOR EACH ROW is invalid syntax.

  C. No; the syntax should be CREATE TRIGGER city-bi ON city BEFORE INSERT....

  D. No; the OLD keyword cannot be used in an INSERT trigger.

  Correct Answer: A

• Question 97:

  The tab-delimited file"/tmp/people,txt contains:

  1636 Carsten Pederson Denmark 4672 Kai Voigt Germany 4628 Max Mether France

  This is the structure of the people table: Mysq1> DESCRIBE people; Which statement will load the first and last names into the Names column and the country into the country column?

  

  A. LOAD DATA INFILE `/tmp/people.txt'INTO TABLE PEOPLE@First=$2. @Last=$3 @Country=$4 (CONCAT (@First, ` `,@Last) , @ Country)

  B. LOAD DATA INFILE `/tmp/people.txt ` INTO TABLE People @Skip=$1 , @ First=$2, @Last=$3, @ Country=4, (CONCAT (@First, ` ` .@ Last) , @ Country)

  C. LOAD DATA INFILE `/tmp/people.txt `INTO TABLE People (@ Skip, @First , @Last, @Country SET Name=CONCAT (@First, ` `,@Last)

  D. LOAD DATA INFILE `/tmp/people,txt, INTO TABLE People. (@Skip. @First, @Last, @Country) Country=@country

  E. It is not possible to load the data from the file/tmp/people.txt into the people table,as shown.

  Correct Answer: C

• Question 98:

  What are two ways in which normalizing your tables helps improve performance In MySQL?

  A. Smaller table sizes and row lengths improve sorting operations.

  B. Separate tables allow indexing more columns.

  C. Fewer nullable column improve index usage.

  D. Normalizing Improves the performance of innodb_file_per _table.

  Correct Answer: D

• Question 99:

  You create a table and a stored procedure:

  CREATE TABLE t1 (f1 int);

  INSERT INTO t1 VALUES (1), (2) , (3), (4), (5);

  CREATE PROCEDURE sum_t1()

  BEGIN

  DECLARE done INT DEFAULT 0;

  DECLARE va1 INT;

  DECLARE result CURSOR FOR SELECT f1 FROM t1;

  DECLARE CONTINUE HANDLER FOR NOT FOUND SET done=1; OPEN cur;

  REPEAT

  FETCH cur INTO va1;

  IF NOT done THEN

  SET result = result +va1;

  END IF:

  UNTIL done END REPEAT;

  SELECT result;

  END

  CALL sum_t1();

  What is the result of the CALL statement?

  A. The procedure completes, and 15 is returned

  B. The procedure's IF condition is not satisfied, and 0 is returned.

  C. The procedure's loop is not entered, and 1 is returned.

  D. An infinite loop will be running until the command is killed.

  Correct Answer: D

• Question 100:

  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.

  Correct Answer: DF