Oracle
1Z0-061 · Question #320
1Z0-061 Question #320: Real Exam Question with Answer & Explanation
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Question
A UNIQUE constraint on a column requires an index. Which of the following scenarios is correct? (Choose one or more correct answers.)
Options
- AIf a UNIQUE index already exists on the column, it will be used.
- BIf a NONUNIQUE index already exists it will be used.
- CIf a NONUNIQUE index already exists on the column, a UNIQUE index will be created implicitly.
- DIf any index exists on the column, there will be an error as Oracle attempts to create another
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