Free Access Oracle.1z0-071.v2022-09-21.q298 Practice Test (Page 58)

Question 281

Which statement is true regarding the INTERSECT operator?

A.The names of columns in all SELECT statements must be identical.

B.It ignores NULL values.

C.Reversing the order of the intersected tables alters the result.

D.The number of columns and data types must be identical for all SELECT statements in the query.

Question 282

Examine the structure of the EMPLOYEES table.

There is a parent-child relationship between EMPLOYEE_ID and MANAGER_ID.
You want to display the last names and manager IDs of employees who work for the same manager as the employee whose EMPLOYEE_ID is 123.
Which query provides the correct output?

A.SELECT m.last_name, e.manager_idFROM employees e LEFT OUTER JOIN employees mon (e.manager_id = m.manager_id)WHERE e.employee_id = 123;

B.SELECT e.last_name, m.manager_idFROM employees e RIGHT OUTER JOIN employees mon (e.manager_id = m.employee_id)AND e.employee_id = 123;

C.SELECT e.last_name, e.manager_idFROM employees e RIGHT OUTER JOIN employees mon (e.employee_id = m.employee_id)WHERE e.employee_id = 123;

D.SELECT e.last_name, m.manager_idFROM employees e LEFT OUTER JOIN employees mon (e.employee_id = m.manager_id)WHERE e.employee_id = 123;

Question 283

Examine the structure of the SHIPMENTS table:

You want to generate a report that displays the PO_IDand the penalty amount to be paid if the SHIPMENT_DATEis later than one month from the PO_DATE. The penalty is $20 per day.
Evaluate the following two queries:

Which statement is true regarding the above commands?

A.Only the first query executes successfully and gives the correct result.

B.Only the second query executes successfully but gives a wrong result.

C.Only the first query executes successfully but gives a wrong result.

D.Only the second query executes successfully and gives the correct result.

E.Both execute successfully and give correct results.

Question 284

Which three statements about roles are true? (Choose three.)

A.Roles are assigned to roles using the ALTER ROLEstatement.

B.A single role can be assigned to multiple users.

C.A single user can be assigned multiple roles.

D.Privileges are assigned to a role using the ALTER ROLEstatement.

E.A role is named group of related privileges that can only be assigned to a user.

F.Privileges are assigned to a role using the GRANTstatement.

G.Roles are assigned to users using the ALTER USERstatement.

Question 285

Which three statements are true about inner and outer joins?

A.Outer joins can be used when there are multiple join conditions on two tables.

B.A full outer join returns matched and unmatched rows.

C.An inner join returns matched rows.

D.Outer joins can only be used between two tables per query.

E.A full outer join must use Oracle syntax.

F.A left or right outer join returns only unmatched rows.

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Question 281

Question 282

Question 283

Question 284

Question 285

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