Oracle
1Z0-071 · Question #148
1Z0-071 Question #148: Real Exam Question with Answer & Explanation
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Question
Examine the structure of the CUSTOMERS table: (Choose two.) CUSTNO is the PRIMARY KEY. You must determine if any customers' details have been entered more than once using a different CUSTNO, by listing all duplicate names. Which two methods can you use to get the required result?
Exhibit
Options
- ASubquery
- BSelf-join
- CFull outer-join with self-join
- DLeft outer-join with self-join
- ERight outer-join with self-join
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