Question 1

Examine the description of the employees table:

Which query requires explicit data type conversion?

Options :

A :

B :

C :

D :

Answer: A

Question 2

View the Exhibits and examine the structure of the COSTS and PROMOTIONS tables.

You want to display PROD_IDS whose promotion cost is less than the highest cost PROD_ID in a promotion time interval.

Examine this SQL statement:

Exhibit 1.

Exhibit 2.

What will be the result?

Options :

A : It gives an error because the ALL keyword is not valid

B : It gives an error because the GROUP BY clause is not valid

C : It executes successfully but does not give the required result

D : It executes successfully and gives the required result

Answer: D

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

Which compression method is recommended for Direct-Path Insert operations?

Options :

A : COLUMN STORE COMPRESS BASIC

B : COLUMN STORE COMPRESS ADVANCED

C : RON STORE COMPRESS BASIC

D : ROW STORE COMPRESS ADVANCED

Answer: C

Question 5

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