Online 1Z0-082 Practice Test

Question 1

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 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:

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Exhibit 1.

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Exhibit 2.

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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 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 4

Examine the description of the employees table:

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Which query requires explicit data type conversion?

Options :

A :

B :

C :

D :

Answer: A

Question 5

Which two statements are true about Database Instances and Real Application Clusters (RAC)?

Options :

A : A RAC database can have one Instance.

B : A RAC database can have instances on separate servers.

C : Two RAC databases can share their instances.

D : A RAC database must have three or more Instances.

E : A RAC database must have two or more instances.

Answer: A,B

EXPERTY DESIGNED 1Z0-082 PRACTICE TEST