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READ Free Dumps For Oracle- 1z0-020





Question ID 7740

Examine this execution plan:

Execution Plan

0SELECT STATEMENT Optimizer = CHOOSE

10COUNT(STOPKEY)

21VIEW

32SORT (ORDER BY STOPKEY)

43TABLE ACCESS (FULL) OF 'CLASSES'

Which statement generated this execution plan?

Option A

SELECT COUNT (*) FROM classes ORDER BY stopkey;

Option B

SELECT COUNT (*) FROM classes ORDER BY start_date;

Option C

SELECT * FROM (SELECT * FROM classes ORDER BY start_date DESC) WHERE ROWNUM<11;

Option D

SELECT * FROM (SELECT * FROM classes WHERE ROWNUM< 11) ORDER BY start_date DESC;

Correct Answer A
Explanation


Question ID 7741

What is the maximum number of archival destinations allowed in Oracle 8i?

Option A

1

Option B

2

Option C

3

Option D

5

Option E

7

Correct Answer D
Explanation

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