Question 1

View the Exhibit and examine the description of the tables.

You execute this SQL statement:

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Which three statements are true?

Options :

A : The statement will fall if a row already exists in the sales table for product 23.

B : The sales table has five foreign keys.

C : A product can have a different unit price at different times.

D : A customer can exist in many countries.

E : The statement will execute successfully and a new row will be inserted into the sales table.

F : The statement will fail because a subquery may not be contained in a values clause.

Answer: A,B,C

Question 2

Which two statements are true about single row functions? (Choose two.)

Options :

A : MOD : returns the quotient of a division operation

B : FLOOR : returns the smallest integer greater than or equal to a specified number

C : TRUNC : can be used with NUMBER and DATE values

D : CONCAT : can be used to combine any number of values

E : CEIL : can be used for positive and negative numbers

Answer: A,C

Question 3

Which two statements are true regarding the UNION and UNION ALL operators? (Choose two.)

Options :

A : Duplicates are eliminated automatically by the UNION ALL operator

B : The number of columns selected in each SELECT statement must be identical

C : The names of columns selected in each SELECT statement must be identical

D : The output is sorted by the UNION ALL operator

E : NULLS are not ignored during duplicate checking

Answer: A,B

Question 4

Examine this SQL statement:

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, any one of which can complete the query successfully. (Choose three.)

Options :

A : ORDER BY ''Last Name''

B : ORDER BY 2, 1

C : ORDER BY 2, cust_id

D : ORDER BY CUST_NO

E : ORDER BY ''CUST_NO''

Answer: B,C,D

Question 5

Which two actions can you perform using DBCA for an existing database?

Options :

A : Create a template that can be used to clone the database.

B : Change the server mode from dedicated to shared, and vice versa.

C : Change the character set.

D : Create an additional listener.

E : Create nonstandard block size tablespaces.

Answer: B,C

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