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Oracle 1z0-882 Exam Overview:

Oracle 1z0-882 Exam Syllabus Topics:

Oracle Certified Professional, MySQL 5.6 Developer: Frequently Asked Questions

Oracle Certified Professional, MySQL 5.6 Developer Sample Questions:

Question 1

Consider the my_table table with these contents:

You execute:
SELECT 1 FROM my_table;
What is the result?

A. Two values: 11, 12
B. An error message
C. Two values: 11, 13
D. A single value: 1
E. Two values: 1, 1

Question 2

You wish to create a trigger on the country table. It will populate two session variables based on the row that is
deleted:
@ old _countryNames with the value of the Name field
@ old _countryName with the value of the code field
You may assume that only one row is ever deleted at a time.
CREATE TRIGGER Country_ad
AFTER DELETE ON Country
FOR EACH ROW
SET @old _CountryName= NEW.Name,
@ old _CountryCode=NEW.Code;
What is the outcome of the CREATE TRIGGER statement?

A. An error results because FOR EACH ROW is invalid syntax.
B. An error results because the NEW keyword cannot be used in a DELETE trigger.
C. An error results because a BEGIN. . .END block is required.
D. The trigger will be created successfully.

Question 3

The city table has the following structure:

Consider the statement with an incorrect field name:
PREPARE countryBYID FROM 'SELECT country FROM city WHERE ID=?,
What happens if a prepared statement named countryByID already exists when the above statement is executed?

A. A duplicate name error will result because a prepared statement with the same name already exists.
B. An unknown column error will result and no prepared statement named countryByID will exist.
C. An unknown column error will result and the old prepared statement definition will remain in effect.
D. A warning will result and the old prepared statement definition will remain in effect.

Question 4

A table (t1) contains 1000 random integer values in the first column (col1). The random values range from 1 to 1000.
You execute this query:
SELECT col1 FROM t1 WHERE col1< 100
UNION
SELECT col1 FROM t1 WHERE col1 BETWEEN 100 and 200
UNION ALL
SELECT col1 FROM t1 WHERE col 1 >=900
What is the output?

A. A list of all values, including duplicates, in the ranges of 1-200 and 900-1000
B. An error, because mixing UNION and UNION ALL in the same query is not permitted
C. A list of unique values within the ranges of 1-200 and 900-1000
D. A list of unique values within the range of 1-200 and a list of all values, including duplicates, on the table within the
range of 900-1000
E. A list of all values , including duplicates, in the range of 1-200 and a list of unique values in the range of 900-1000

Question 5

You have two test tables:
Code_innodb as InnoDB engine
Code_ myisam as MYISAM engine
The tables have the same structure:

The tables have one row of data:

You execute an INSERT statement on both code_myisam tables and receive duplicate key errors:
mysql> INSERT INTO code_innodb VALUES (1, 'Alpha'), (2, 'Beta'), (3, 'charlie,),(4, 'Delta');
ERROR 1062 (23000): Duplicate entry '3' for key 'PRIMARY'
Mysql> INSERT INTO code_myisam VALUES (1, 'Alpha'), (2, 'Beta'), (3, 'charlie'),
(4, 'Delta');
ERROR 1062 (23000); Duplicate entry '3' for key 'PRIMARY'
What is the expected output of the SELECT statements?

A. Option B
B. Option C
C. Option A
D. Option D

Solutions: