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Question 1:

Evaluate the following SQL statement: SQL> select cust_id, cust_last_name “Last name” FROM customers WHERE country_id = 10 UNION SELECT cust_id CUST_NO, cust_last_name FROM customers WHERE country_id = 30 Identify three ORDER BY clauses either one of which can complete the query.

A. ORDER BY “Last name”

B. ORDER BY 2, cust_id

C. ORDER BY CUST_NO

D. ORDER BY 2, 1

E. ORDER BY “CUST_NO”

Correct Answer: ABD

Using the ORDER BY Clause in Set Operations

-The ORDER BY clause can appear only once at the end of the compound query.

-Component queries cannot have individual ORDER BY clauses.

-The ORDER BY clause recognizes only the columns of the first SELECT query.

-By default, the first column of the first SELECT query is used to sort the output in an

ascending order.

Question 2:

Which two are the minimal requirements for a self-join? (Choose two.)

A. Only equijoin conditions may be used in the query.

B. Outer joins must not be used in the query.

C. There must be a condition on which the self-join is performed.

D. No other condition except the self-join may be specified.

E. The table used for the self-join must have two different alias names in the query.

Correct Answer: CE

Question 3:

Which three arithmetic operations can be performed on a column by using a SQL function that is built into Oracle database? (Choose three.)

A. Finding the lowest value

B. Finding the quotient

C. Raising to a power

D. Subtraction

E. Addition

Correct Answer: ACE

Question 4:

Which three statements are true reading subquenes?

A. A Main query can have many subqueries.

B. A subquery can have more than one main query.

C. The subquery and main query must retrieve date from the same table.

D. The subquery and main query can retrieve data from different tables.

E. Only one column or expression can be compared between the subquery and main query.

F. Multiple columns or expressions can be compared between the subquery and main query.

Correct Answer: ADF

Question 5:

Which two tasks can be performed by using Oracle SQL statements?

A. changing the password for an existing database user

B. connecting to a database instance

C. querying data from tables across databases

D. starting up a database instance

E. executing operating system (OS) commands in a session

Correct Answer: AC

http://www.techonthenet.com/oracle/password.php https://docs.oracle.com/cd/B28359_01/server.111/b28324/tdpii_distdbs.htm

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Question 6:

You issue this command which succeeds:

SQL> DROP TABLE products;

Which three statements are true?

A. All existing views and synonyms that refer to the table are invalidated but retained.

B. Any uncommitted transaction in the session is committed.

C. Table data and the table structure are deleted.

D. All the table\’s indexes if any exist, are invalidated but retained.

E. Table data is deleted but the table structure is retained.

Correct Answer: BCD

Question 7:

Which statement is true regarding the default behaviour of the ORDER by clause?

A. Numeric values are displayed in descending order if they have decimal positions.

B. Only columns that are specified in the SELECT list can be used in the ORDER by clause.

C. In a character sort, the values are case-sensitive.

D. NULLs are not including in the sort operation

Correct Answer: C

Question 8:

View the exhibit for the structure of the STUDENT and FACULTY tables. STUDENT NameNull?Type

STUDENT_IDNOT NULLNUMBER(2)

STUDENT_NAMEVARCHAR2(20)

FACULTY_IDVARCHAR2(2)

LOCATION_IDNUMBER(2)

FACULTY

NameNull?Type

FACULTY_IDNOT NULLNUMBER(2)

FACULTY_NAMEVARCHAR2(20)

LOCATION_IDNUMBER(2)

You need to display the faculty name followed by the number of students handled by the faculty at the base location.

Examine the following two SQL statements:

Statement 1

SQL>SELECT faculty_name, COUNT(student_id)

FROM student JOIN faculty

USING (faculty_id, location_id)

GROUP BY faculty_name;

Statement 2

SQL>SELECT faculty_name, COUNT(student_id)

FROM student NATURAL JOIN faculty

GROUP BY faculty_name;

Which statement is true regarding the outcome?

A. Only statement 2 executes successfully and gives the required result.

B. Only statement 1 executes successfully and gives the required result.

C. Both statements 1 and 2 execute successfully and give different results.

D. Both statements 1 and 2 execute successfully and give the same required result.

Correct Answer: B

Question 9:

You need to display the date 11-oct-2007 in words as `Eleventh of October, Two Thousand Seven\’. Which SQL statement would give the required result?

A. SELECT TO_CHAR (TO_DATE (\’11-oct-2007\’), `fmDdthsp “of” Month, Year\’)FROM DUAL

B. SELECT TO_CHAR (`11-oct-2007\’, `fmDdspth “of” Month, Year\’)FROM DUAL

C. SELECT TO_CHAR (TO_DATE (`11-oct-2007\’), `fmDdspth of month, year\’)FROM DUAL

D. SELECT TO_DATE (TO_CHAR (\’11-oct-2007\’), `fmDdspth “of” Month, Year\’))FROM DUAL

Correct Answer: C

Question 10:

Examine the commands used to create DEPARTMENT_DETAILS and COURSE_DETAILS:

You want to generate a report that shows all course IDs irrespective of whether they have corresponding department IDs or not but no department IDs if they do not have any courses. Which SQL statement must you use?

A. SELECT course_id, department_id, FROM department_details d RIGHT OUTER JOIN course_details c USING (department_id)

B. SELECT c.course_id, d.department_id FROM course_details c RIGHT OUTER JOIN .department_details d ON (c.depatrment_id=d.department_id)

C. SELECT c.course_id, d.department_id FROM course_details c FULL OUTER JOIN department_details d ON (c.department_id=d. department_id)

D. SELECT c.course_id, d.department_id FROM course_details c FULL OUTER JOIN department_details d ON (c.department_idd. department_id)

Correct Answer: C

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